This kind of medicine ________in a dry and cool place。
#44678
A
keep
B
kept
C
must keep
D
must be kept
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Young trees should ________ every day.
#45076
A
water
B
watered
C
be watering
D
be watered
 The 30th London Olympic Games ____________ on July 27th, 2012.
#44703
A
will be held
B
is held
C
was held    
D
has been held
---It’s difficult for the villagers to cross the river. ---I think a bridge______ over the river.
#44765
A
should be built
B
is being built
C
has been built
D
was built
 —Tom! I looked for you everywhere at the party last night.—Oh, I          to the party.
#44393
A
am invited
B
was invited
C
am not invited
D
wasn’t invited