Complete the sentences by putting the verb in brackets into the Past Simple or Past Progressive.

1. I saw a light in your window as I ___________________ (pass) by.
2. The student ________________ (answer) the question when the headmistress came in.
3. Five years ago my Dad ___________________ (sell) his farm and __________________ (buy) a business stock company.
4. In 1999, KazakhOil __________________ (register) a subsidiary, Zhambai joint stock company.
5. Her computer _____________________ (crash) when she ____________________ (search) the Internet.
6. The acquired data _______________________ (help) the Agip KCO international oil consortium discover the Kashagan field.
7. In the spring of 2001 the Central Asian Industrial Holding ____________________ (launch) an attack on the assets of Hurricane Hydrocarbons.
8. All day yesterday we ___________________ (try) to develop a Web-based project.
9.Tests _________________________ (show) that the sea bed _____________________ (sink).
10. Engineers _________________________ (solve) the problem by installing a system which ________________________ (make) it possible to keep the foundations of the terminal building level.

You need to make the choice first and then we will be glad to check it for you. We do not DO the work for you but HELP after you have tried it.

Simple Past = passed, rode, wrote
Past Progressive = was passing, was riding, was writing

Sra

1. I saw a light in your window as I passed by.

To put the verb "pass" into the Past Simple, you simply change the base form "pass" to its past form "passed."

2. The student answered the question when the headmistress came in.
To put the verb "answer" into the Past Simple, you keep the base form "answer" unchanged as it is already in the past tense.

3. Five years ago my Dad sold his farm and bought a business stock company.
To put the verbs "sell" and "buy" into the Past Simple, you change the base form "sell" and "buy" to their respective past forms: "sold" and "bought."

4. In 1999, KazakhOil registered a subsidiary, Zhambai joint stock company.
To put the verb "register" into the Past Simple, you keep the base form "register" unchanged as it is already in the past tense.

5. Her computer crashed when she was searching the Internet.
To put the verbs "crash" and "search" into the Past Progressive, you change the base form "crash" to its past participle form "crashed" and the base form "search" to its ing form "searching."

6. The acquired data helped the Agip KCO international oil consortium discover the Kashagan field.
To put the verb "help" into the Past Simple, you keep the base form "help" unchanged as it is already in the past tense.

7. In the spring of 2001 the Central Asian Industrial Holding launched an attack on the assets of Hurricane Hydrocarbons.
To put the verb "launch" into the Past Simple, you keep the base form "launch" unchanged as it is already in the past tense.

8. All day yesterday we tried to develop a Web-based project.
To put the verb "try" into the Past Simple, you keep the base form "try" unchanged as it is already in the past tense.

9. Tests showed that the sea bed was sinking.
To put the verbs "show" and "sink" into the Past Simple, you change the base form "show" to its past form "showed" and the base form "sink" to its ing form "sinking."

10. Engineers solved the problem by installing a system which made it possible to keep the foundations of the terminal building level.
To put the verbs "solve" and "make" into the Past Simple, you keep the base forms "solve" and "make" unchanged as they are already in the past tense.