Without gravity, we _____ walk on the ground as freely as we do now. 
#63085
A
couldn’t
B
mustn’t
C
shan’t
D
needn’t
推荐题目
— Where is my dictionary?— You ______ it in the wrong place.
#62851
A
must
B
should have put
C
might put
D
might have put
-Thank you for your gift. -________________
#77112
A
The same to you.
B
You’re welcome.
C
Thank you.
D
Good idea.