These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．
#89859
A
would have been unthinkable
B
would not be unthinkable
C
would be unthinkable
D
would not have been unthinkable
推荐题目
--- Fancy meeting you here!--- Pleased to see you. If they ________ me to the party, I ________ be here.
#87706
A
hadn’t invited; wouldn’t be
B
didn’t invite; wouldn’t be
C
hadn’t invited; wouldn’t have been
D
didn’t invite; won’t be
Mr Bush is on time for everything. How____ it be that he was late for the opening ceremony?.
#87653
A
can
B
should
C
may
D
must
—It’s many years since I saw you last; I you at all． —I wouldn’t have, either; if someone you by the name．
#87318
A
didn’t recognize; hadn’t called
B
didn’t recognize; didn’t call
C
haven’t recognized; didn’t call
D
recognized; hag called
----Mary broke up with me!----You ______ have forgotten about the Valentine's Day．
#86982
A
shouldn't
B
couldn't
C
needn't
D
mustn't
---Sorry, Professor Smith. I didn't finish the assignment yesterday.---Oh, you have done it as yesterday was the deadline.
#87069
A
must
B
mustn't
C
should
D
shouldn't