In the past twelve months the research members ______ the effectiveness of many materials in a home building.
#102889
A
had studied
B
would study
C
studied
D
have studied
推荐题目
-----Where ____ you put the ruler? I can't see it anywhere. -----I put it right here. But now it is ____.
#104201
A
have, gone
B
did, missed
C
had ,going
D
will, missing
On Monday mornings it usually ________ me an hour to drive to work although the actual distance is only 20 miles.
#99206
A
takes
B
is taking
C
took
D
will take
I listened carefully to his long boring speech, but could not what he was talking about.
#99882
A
pick out
B
make out
C
bring out
D
give out
She has set a new record, that is, the sales of her latest book ________ 50 million.
#104773
A
have reached
B
has reached
C
are reaching
D
had reached
-- Did you visit your grandparents yesterday?--Yes, and when I got there, they _____ in the fields .
#99940
A
worked
B
have worked
C
were working
D
had worked