In order to find the missing child，villagers ________ all they can over the past five hours.(2012·安徽)
#99573
A
did
B
do
C
had done
D
have been doing
推荐题目
China's present environment situation is from bad to worse and if we _________ now to protect the environment, we’ll live to regret it.
#99934
A
hadn’t acted
B
haven’t acted
C
don’t act
D
won’t act
Ladies and gentlemen, please fasten your seat belt. The plane __________.
#102320
A
takes off
B
is taking off
C
has taken off
D
took off
（2014年(春)重庆市高三考前冲刺测试卷）8. Asia ______ the popularity of South Korean culture that has been flooding other countries since turn of the century.
#99100
A
had been increasingly feeling
B
increasingly felt
C
will increasingly feel
D
is increasingly feeling
—— Did you hand in your application for a league member?——Not yet. If I _____to see my father, I would have.
#103039
A
didn’t go
B
haven’t gone
C
wouldn’t have gone
D
hadn’t gone
—You may find the key to the math problem on page 107．—Ah, it's so simple. I wonder why I _____ of that．
#100893
A
hadn’t thought
B
haven't thought
C
didn't think
D
wasn't thinking