A(n)ofscientistsarelookinginto

A (n) __________ of scientists are looking into the matter and have realized a certain __________ of time is to be spent.

A．number; amount	B．number; amounts
C．amount; amount	D．amount; number

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— Are you coming to Jeff’s party?
— I’m not sure. I _____ go to the concert instead.

A．must

B．would

C．should

D．might

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— Mary’s got mad and has been sent to the mental hospital. Did you tell her boss about that?
— Yes, but I _____ her husband first.

A．should have told

B．shouldn’t have told

C．must have told

D．needn’t have told

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My English-Chinese dictionary has disappeared. Who _____ have taken it?

A．should

B．must

C．could

D．would

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I should very much like to have gone to the party but I _________.

A．am not invited	B．am not being invited
C．shall not be invited	D．was not invited

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—_______ John this week?
—Yes.
—Where _______ him?
—In the library.

A．Did you see; did you see	B．Have you seen; did you see
C．Do you see; have you seen	D．Have you seen; have you seen

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