If we __________ careful，fire can be dangerous。
#41667
A
don’t be
B
are
C
aren’t
D
won’t be
推荐题目
— Your shoes are so old. Why don’t buy a new pair?— Because I _________ all my money on an MP5.
#36364
A
spend
B
have spent
C
am spending
D
was spending
—Do you __________ an American friend?—No, I don’t. But my sister __________ one.
#41876
A
has, has
B
has, have
C
have, have
D
have, has
Mr. Black is going to marry a girl he __________ in Japan last year.
#42139
A
meets
B
met
C
has met
D
would meet
——Why is the classroom so dirty?——Sorry, Sir. It _____ yesterday. We forgot to do it.
#41937
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned