---- John ,why are you so upset?----I _________ my cellphone all morning but it is nowhere to be found.
#100517
A
am looking for
B
have looked for
C
have been looking for
D
had looked for
推荐题目
Some people go back for their education to ________ another degree or diploma (文凭) to impress the society.
#100736
A
require
B
acquire
C
accept
D
request
At this time tomorrow ____over the Atlantic.
#99290
A
we’re going to fly
B
we’ll be flying
C
we’ll fly
D
we’re to fly
Experiments of this kind ___in both the U.S and Europe well before the Second World War.
#102411
A
had conducted
B
have conducted
C
have been conducted
D
had been conducted
—Nice to see you again after all these years. What _____?—Well, I’ve tried many things since we left school. I’m now working for a large oil company.
#101650
A
have you done
B
were you doing
C
did you do
D
have you been doing
China sent up Shenzhou VII manned spaceship into spaceship successfully, which shows that science and technology ______ rapidly in China.
#104916
A
has been developing
B
develops
C
developed
D
has developed