__________ was Doimoi officially initiated?- In 1986.
A.Where
B.How
C.When
D.Why

Choose the underlined part that needs corrections.
We didn’t have many knowledge about physics
A.we didn't
B.have
C.many knowledge
D.about physics

Choose the underlined part that needs corrections.
If Tom had come sooner, he could has eaten dinner with the whole family.
A.sooner
B.has eaten
C.with
D.the whole

Choose the underlined part that needs corrections.
They can’t pay the rent unless their parents don’t send them some money.
A.pay
B.the rent
C.don't send
D.some

What is the topic of the passage?
A.Students don't have to go to school any more
B.The effect of information technology on education
C.Students can know about their weak aspects to focus
D.Computer software will make sure students learn at home

Many people still refused to believe that smoking__________dangerous.

A.be
B.is
C.are
D.been

Living in the city is getting__________.
A.more expensive and expensive
B.more expensive and more expensive
C.expensive and expensive
D.more and more expensive

He spends__________time on his work.
A.much and much
B.more and more
C.more and much
D.many and many.

She__________to me since last year.
A.has not written
B.wrote
C.writes
D.had not written

We avoid__________our environment.
A.polluted
B.polluting
C.pollute
D.to pollute