B1_7&8 Revise and Check

I need _____ some emails.

• to answer

• answer

• answering

The situation is difficult _____.

• for explain

• explain

• to explain

I don't know what _____.

• do

• to do

• that I do

I don't really mind _____ housework.

• do

• to do

• doing

_____ is one of the best forms of exercise.

• Swiming

• Swimming

• Swim

_____ bring our books tomorrow?

• Do we have to

• Have we to

• Do we must

It's free. You _____ pay.

• don't have to

• mustn't

• haven't to

You must _____ your grandmother.

• to call

• calling

• call

You _____ drink so much coffee.

• not should

• don't should

• shouldn't

I think you should _____ to her about it.

• to talk

• talk

• talking