While watching television, __________.
#90451
A
the doorbell rang
B
the doorbell rings
C
we heard the doorbell ring
D
we heard the doorbell rings
推荐题目
You have a big mouth,Tom. You have told everybody the secret.
#87700
A
shouldn’t
B
mustn’t
C
can’t
D
mightn’t
—What happened to the young trees we planted?—The trees well, but I didn't water them.
#87410
A
might grow
B
needn't have grown
C
would grow
D
would have grown
-_______ I tell the head teacher all that has happened? -No, you _______! Mr. Xin would be terribly angry.
#89147
A
Will; needn’t
B
Would; can
C
Should; mustn’t
D
Must; don’t have to
The flower is dead. I ___ it more water.
#86699
A
will give
B
ought to give
C
could have given
D
ought to have given
—Listen! There is a knock on the door．Who _____ it be?—It must be Jack．Just now I sent for him．
#87583
A
shall
B
can
C
must
D
might