But for water,it ______ possible to live in the desert.
#86913
A
is    
B
was
C
were
D
wouldn't be
推荐题目
—You didn’t invite Mary to the ball?—____ her, too? 
#89489
A
Must I invite
B
Should I have invited
C
Must I have invited
D
Should I invite
I was admitted into a famous university. My success______ me pleased with myself but I didn’t .
#86810
A
might have made
B
might make
C
should have made
D
should make
I’m most awfully grateful to you. I can’t think what I ________ without you.
#87709
A
could do
B
would do
C
should have done
D
must have done
----This is for you. ----You____have!I do not know how to thank you.
#87113
A
must not
B
couldn´t
C
needn’t
D
shouldn’t