The scientist did ＿＿ experiments to test the new drug.
#14391
A
a series of
B
a good many of
C
a great many
D
a lots of
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He had a headache and went to the chemist's to get something for his pain________.
#12309
A
relax
B
relief
C
leisure
D
comfort
The situation put us at a serious________，which made us very worried.
#10651
A
advantage
B
disadvantage
C
condition
D
situation
It is not rare in_____ that people in ______ fifties are going to university for further education．
#14381
A
90s ; the
B
the 90s; /
C
90s; their
D
the 90s ; their
.My teacher is very nice. I’ll never forget the ______he has done for me.
#12928
A
favor
B
kindness
C
help
D
benefit