A new kind of drug ___ ___ to cure H7N9 bird flu by the scientists and they are hopeful that they will succeed in a couple of weeks.
#100007
A
has been developed
B
is being developed
C
is developing
D
has developed
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–I _______ as the manager in this company. –May I know since when?
#102073
A
worked
B
had worked
C
have worked
D
am working
—I'm sorry to interrupt you, but I don't follow you now.—Sorry, I _____ it clear about my plan.
#100534
A
didn't make
B
hadn't make
C
wasn't making
D
haven't made
The chairman’s speech ______ the radio when I turned it on.
#104717
A
was broadcast on
B
was being broadcast on
C
was broadcasting in
D
broadcast over
My toothache me. I thought it was going away, but it is getting worse now.
#102681
A
kills
B
is killing
C
has killed
D
killed