—Someone is knocking at the door. Who ______ it be? —It ______ be Tom. He is still in the school.
#52340
A
may; can’t
B
can; mustn’t
C
might; couldn’t
D
could; may not
推荐题目
The workers in the Huashan Mountains have to rubbish to keep the mountains clean.
#60114
A
turn up
B
pick up
C
mix up
D
give up
--- _____ you_____your room yet? --- Yes. I_________it a moment ago.
#53817
A
Did；clean；cleaned
B
Have；cleaned；have cleaned
C
Have; cleaned; cleaned
D
Will; clean; clean
— Amy, I called you yesterday evening, but nobody answered the phone.— Oh, I _________ a walk with my mother at that time.
#62058
A
take
B
took
C
am taking
D
was taking
Smoking is bad for your dad’s health. You’d better ask him to ______.
#61803
A
give up it
B
give it up
C
take out it
D
take it out