—How’s your tour around the North Lake? Is it beautiful?—It ________ be, but it is now heavily polluted.
#90468
A
will
B
would
C
should
D
must
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He knows it is high time that he ________ at once.
#87730
A
quits smoking
B
quitted smoking
C
should quit to smoke
D
quitted to smoke
Thank you very much. But for you, I ____ in the fight yesterday.
#90233
A
would have been died
B
would have been killed
C
should die
D
would have killed
You _____ him the news; he knew it already. 
#89557
A
needn’t tell
B
needn’t have told
C
mightn’t tell
D
mightn’t have told