Sự Phối hợp Thì

By the time he arrives here tomorrow, they _______ for London.

• are leaving

• will left

• will have left

• would have left

When I _______ to the airport, I realized that I _______ my passport at home.

• got/was left

• had got/had left

• got/had left

• got/left

Call me as soon as you _______ your test results.

• got

• will have got

• will get

• get

I _______ along the street when I suddenly heard footsteps behind me.

• walked

• walk

• am walking

• was walking

The boy fell while he _______ down the stairs.

• runs

• was running

• running

• run

I will come and see you before I _______ for America.

• left

• have left

• will leave

• leave

She hurt herself while she _______ hide-and-seek with her friends.

• was playing

• played

• had played

• is playing

Only after the bus _______ for a few miles did Jane realize she was on the wrong route.

• runs

• has run

• had run

• was running

While I _______ at the bus stop, three buses went by in the opposite direction.

• were waiting

• had waited

• waited

• was waiting

By the end of last March, I _______ English for five years.

• will have studied

• will have been studying

• had been studying

• had been studied