It is believed that a new kind of drug ______ by the scientists and they are hopeful that they will succeed in a few months.
#102623
A
has been developed
B
is being developed
C
is developing
D
has developed
推荐题目
His father ________ a letter from him since he left without a word .
#103564
A
hasn’t received
B
didn’t get
C
didn’t have
D
haven’t heard
Afetr dinner he gave Mr. Richardson ________ride to ________Capital Airport.
#99276
A
the, a
B
a the
C
/, a
D
/, the
Great changes ______ in my school in the past ten years.
#100927
A
took place
B
were taken place
C
have taken place
D
have been taken place
Instead of telling the joke he _______, Crystal made up a new one.
#102101
A
made
B
has made
C
had made
D
would make
When I was at school, I _____ up very late, reading storybooks.
#102944
A
used to stay
B
was used to stay
C
used to staying
D
am used to staying