It’s four o’clock in the afternoon. The boys _

It’s four o’clock in the afternoon. The boys __ in the pool.

#41532

is swiming

are swiming

are swimming

is swimming

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Since we ________ our homework now. Let’s have a rest.

#41543

are doing

will do

have done

When the teacher came into the classroom, the students ____ in groups.

#39479

work

have worked

were working

are working

—Everyone except the twins ____________ Beijing.—Oh, their mother is ill, so they have to look after her.

#36180

have been to.

have gone to.

has been to.

has gone to.

When you        at a restaurant, please order just enough food.

#39057

ate

will eat

eat

have eaten

When I got there, the train _____________.

#39994

has left

left

had left

have left

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