It is important that _________.
A.an exact record to be kept
B.an exact record should be kept
C.to keep an exact record
D.keeping an exact record

His father left New York. The doctor suggested he______there.
A.not stayed
B.won’t stay
C.not stay
D.not go to stay

Congress has decreed that the gasoline tax_________ .
A.should abolished
B.should abolish
C.be abolished
D.is abolished

It is imperative that this letter ________ immediately.
A.were sent
B.sent
C.was sent
D.be sent

It was essential that we________ the lease before the end of the month.
A.sign
B.signed
C.had signed
D.were signing

Look! There are a lot of clouds! It.... soon.
A.is going to rain
B.has been raining
C.will be raining
D.will have rained

For the last hundred years, traveling.... much easier and very comfortable. Now you.... from New York to Los Angeles in a matter of hours.
A.becomes / fly
B.had become / flew
C.will have become / will fly
D.has become / can fly

The chairman requested that__________ .
A.the members studied more carefully the problem
B.the members study the problem carefully
C.with more carefulness the problem could be studied
D.the problem was more carefully studied

It is desirable that the plane ________ as light as possible.
A.be
B.is
C.was
D.were

I can’t find my shoes.
A.My shoes can’t have been found.
B.I wish I knew where my shoes were.
C.If I could have my shoes found.
D.I hope someone will know the place of my shoes.