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
推荐题目
“What are you busy for?”—This is a question we very often get _____ nowadays.
#100536
A
asking
B
being asked
C
asked
D
to ask
We are all _______about her safety . As far as I am _____, this case _____her .
#103237
A
concerns ,concerned , concerns
B
concerned , concerned , concerns
C
concerns , concerns, concerned
D
concerning ,concerned ,concerns
Now then, children, it’s right time you ______.
#102530
A
wash and dress
B
are washed and dressed
C
will wash and dress
D
were washed and dressed