The Trojan War ______ by Helen and her beauty.
#44539
A
causes
B
is caused
C
caused
D
was caused
推荐题目
The number of children who have lost parents to AIDS ___ to rise to over 26 million in 2011.
#44755
A
are expected
B
is expecting
C
are expecting
D
is expected
Food safety is important. Rules must ________ stop people from food pollution.
#44443
A
be made
B
be made to
C
make
D
make to
The light bulb ______ by Edison in the middle of the 1780s.
#44649
A
is invented
B
was invented
C
invented
D
invent
----Smoking should ____________ in school. ----I agree. It’s bad for our health.
#44526
A
be allowed
B
not allow
C
allow
D
not be allowed