Lifting off at sunrise, the hot air balloon goes wherever the wind       blow.
#63659
A
may
B
must
C
need
D
should
推荐题目
I ________ myself more— it was a perfect day.
#62719
A
shouldn’t have enjoyed
B
needn’t have enjoyed
C
wouldn’t have enjoyed
D
couldn’t have enjoyed
--- Where is Jack? I can’t find him anywhere.--- He ______ his homework upstairs.
#63513
A
might have done
B
must have done
C
might be doing
D
must do