When the teacher came into the classroom, the students ___

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

#39479

work

have worked

were working

are working

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There _________ a concert on Qixing Square next Monday evening.

#42339

is going to

is going to be

will have

There _______ a lot of fish in the water.

#40294

are

have

has

－How long has your grandpa ______?－For about 3 months.

#39750

died

been died

been dead

death

All of us except him ______ America.

#39911

have been to

has been to

have gone to

has gone to

—Look, the palace is so great.—Yeah, it     nearly 800 years ago.

#39284

was building

was built

has built

is built

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