Preposition:

I would like to pay the amount __cheque ?
The boat goes__river ?

Which prepositions do you think go in those blanks?

I'll be glad to check your answers.

1.in ?

2.on ?

So which will it be ? By or With ? one answer ?

Either one is correct. Use the one you want.

As you know, English prepositions don't always have exact meanings. Often two or more can be used interchangeably.

Thank you :)

You're welcome.

You can say "by cheque" or "with a cheque."

1. no

Better prepositions are by or with.

2. on is right.