Choose the past form or the past participle for the underlined verb

We /sell/ dozens of magazine subscriptions last week

sold***
selled
have selled
no error

Until this morning, they /kept/ the secrete to themselves

keep
keeped
keeping
no error***

The United states has /lead/ the field in the department of computers

led
leads
leaded
no error***

After dinner, everyone /sit/ down in the shade of the big oak tree

sits
sat***
seated
no error

1A sold

2B kept
C left
C sat
5 past *developed
future. will produce
7present
8past named
9 c past
10d pesentpp
11 d. Pastpp
12 c pastpp
13 fppc
14a goes home with ball
15c wasn't angry
16c tend to ignore
17 a getting
18b included
19 perfect
20 b stars
21a 2nd&4th
22d the night
23b return
24 d. How a telescope
25 b to speak
26 multi
27 a does not fit in
28 c stereo
29d can join
30 b close and loving
31b
32a
33a
34 d
35c highlight
36 d all
37c easy
38c
39d
40 b act
41quint
42 insidious
43ethni
44 dissuade
45 enlighten
46 irr
47b
48c
49a
50c
51 a
52 b
53 a
54d
55b
56 c

29

The third one is incorrect.

The rest are right.

Is number 3 A?

yes

You're welcome!

To determine the past form or past participle of the underlined verbs, follow these steps:

1. Identify the base form of the verb (e.g., sell, keep, lead, sit).
2. Consider the tense and form required (past form or past participle).
3. Apply the appropriate rules for forming the past form or past participle of the verb.

Let's go through each sentence:

1. We /sell/ dozens of magazine subscriptions last week.
- Base form: sell
- Past form: sold
- Past participle: sold
- Correct form: sold (no error)

2. Until this morning, they /kept/ the secret to themselves.
- Base form: keep
- Past form: kept
- Past participle: kept
- Correct form: kept (no error)

3. The United States has /lead/ the field in the department of computers.
- Base form: lead
- Past form: led
- Past participle: led
- Correct form: led (no error)

4. After dinner, everyone /sit/ down in the shade of the big oak tree.
- Base form: sit
- Past form: sat
- Past participle: sat
- Correct form: sat (no error)

In all the sentences, the correct forms for the past form or past participle have been chosen.

thanks!