He ______ have finished his work; otherwise, he wouldn’t be enjoying himself by the seaside.
#88019
A
should
B
must
C
need
D
can
推荐题目
 ---Be careful! Your clothes will catch fire.  ---Thank you._______ so close to the fire.
#87970
A
I didn’t know I was
B
I don’t know I am
C
I hadn’t known I was
D
I don’t know I was
Thank you for giving me a hand. I ______ in the experiment without your valuable help. 
#89288
A
have failed
B
will fail
C
would have failed
D
must have failed