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
—Peter, your hair is getting much too long. It’s high time you __________it cut.—OK. I will.
#87345
A
have
B
had
C
have had
D
will have
—Did you go swimming last Sunday?—No. We would have gone ______ nicer.
#88198
A
if the weather was
B
would the weather have been
C
had the weather been
D
should the weather be
If people ______virtual reality holidays, we ______ on an around-the-world tour．
#87555
A
invent; go
B
invented; had gone
C
invent; have gone
D
invented; would go
—_____ I invite Jack to the party? —Yes, it’ll be nice if you _____.
#88078
A
Will；will
B
Shall；shall
C
Will；do
D
Shall；do
The captain urged that the mission ______ before dark.
#88032
A
must be finished
B
be finished
C
ought to be finished
D
was finished