坝身泄水孔，若采用无压孔，则无压孔是( )组成。

—"Have you seen Mary today？" —"No, I think she______ away on her vacation. "

A．must be

B．may have been

C．must have been

D．might have been

I think it is only by a ______ of imagination that you say you have seen a ghost.

A．pinch

B．lack

C．shortage

D．stretch

"I saw Mary in the library yesterday.""You ______ her, she is still in hospital."

A．mustn't have seen

B．could not see

C．can't have seen

D．must not see

I think it is only by a______ of imagination that you say you have seen a ghost.

A．pinch

B．shortage

C．lack

D．stretch

听力原文：Haven't you seen today's newspaper about the BTL company？

(A) I have enough for today, thanks.

(B) Yes, I'm asking about the new one.

(C) Why do you ask？

(37)

A．

B．

C．

"I saw Mary in the library yesterday.""You ______ her, she is still in hospital."

A．mustn't have seen

B．could not see

C．can't have seen

D．must not see

--I saw Mary in the library yesterday. --You ______ her, she is still in hospital.

A．mustn't have seen

B．could not see

C．can't have seen

D．must not see

"I saw Mary in the library yesterday.""You ______ her, she is still in hospital."

A．mustn't have seen

B．could not see

C．can't have seen

D．must not see

—I saw Mary in the library yesterday. —You ______her, she is still in hospital.

A．mustn’t have seen

B．could not see

C．can’t have seen

D．must not see