Before the meeting finished, they had arranged when ______ next.
A.they met
B.they to meet
C.to meet
D.should they meet

A:- How lovely your pets are! B: _________
A.Thank you, it's nice of you to say so
B.Really? They are so beautiful
C.can you say that again
D.I love them, too

On no account _________ in the office be used for personal materials.
A.the photocopy machines
B.should the photocopy machines
C.the photocopy machines should
D.does the photocopy machines

The greenhouse effect occurs _________ heat radiating from the sun.
A.when does the Earth's atmostphere trap
B.when the Earth's atmostphere traps
C.does the Earth's atmostphere trap
D.the Earth's atmostphere traps

If it hadn't been for his carelessness, we would have finished the work on time.
A.He was careless because he hadn't finished the work on time.
B.Had he been more careful, we would have completed the work on time.
C.If he were more careful, we would finish the work on time.
D.Because he was careful, we finished the work on time.

You look exhausted. Why don't we ______ and have a good rest?
A.call its name
B.call on
C.call off
D.call it a day

_________ in scope, romanticism was a reaction against neoclassical principles.
A.Mainly literary
B.The main literature was
C.It was mainly literary
D.The literature was mainly.

Experiments _________ represent a giant step into the medicine of the future.
A.using gene therapy
B.they use
C.use gene therapy
D.gene therapy uses

This one is prettier, but it costs ____ as the other one.
A.twice as many
B.as many as
C.twice as much
D.as much as

Could we picnic here?" "______"
A.No, you may not.
B.I'm afraid so.
C.Not, I think.
D.I'm sorry. I'm afraid you can't.