You look exhausted. You _____________ in the garden all day.

A. must have worked

B. must be working

C. can’t have worked

D. must have been working

There are no easy ways to learn a foreign language, _____________ ?

If I had a typewriter now, I _____________ this report by myself.

You and your big mouth! It was supposed to be a secret. You _____________ her!

“We gave them the money yesterday, but we haven’t received a receipt yet, __________ ?” she asked her husband.

The incident happening last week left him _____________ confused and hurt.

Tim asked Sally _____________ English so far.

I didn’t see the red light at the crossroads. Otherwise, I _____________ my car.

I was late for my exam because I _____________ about it all night and didn’t get much sleep.

A. had been worrying

B. worry

C. have been worrying

D. was worrying 

Only when you grow up, _____________ the truth.

Anna _____________ halfway to the shops when she realized she'd left her purse at home.

I wish I had someone of my own age _____________ I could trust.

They held a party to congratulate their son _____________ his success.

Are flights with this company often delayed?’ - ‘No, they _____________ on schedule. ’

A. usually left

B. have usually left

C. are usually leaving

D. usually leave 

_____________ giraffe is the tallest of all _____________ animals.

- ‘You and Tim seem to be good mates.’ - ‘Well, I _____________ for ages.’

_____________ people in cities now choose to get married later than previous generations.

She spent _____________ her free time watching TV.

I saw him hiding something in a _____________ bag.

Last summer he _____________ to Ha Long Bay.

In order to make the house more beautiful and newer, the Browns had it _____________ yesterday.

Neither the students nor their lecturer _____________ English in the classroom

The old woman accused the boy _____________ window

If we had finished it before we went on the tour, I think it _____________ a much better record.

When Mark comes home, tell him I’m out a bit, _____________ ?

They agreed _____________ implementing signed cooperation agreement.

_____________ ten minutes earlier, you would have got a better seat.

The thieves _____________ by car but we can’t be sure.

A. must have escaped

B. needn’t have escaped

C. should have escaped

D. might have escaped 

In the modem Western world parents rarely expect their children to support them financially, _____________?

He _____________ for an international company before he became a teacher.

I wish to pay a visit to the beach this summer, _____________ ?

I’d just as soon _____________ to another restaurant as wait for a table here.