These young trees must        .
#44857
A
look after well
B
be well looked after
C
take good care of
D
be taken good care
推荐题目
 Personal computers ______ in 1976. It has changed the whole world.
#44711
A
have invented
B
were invented
C
is invented
D
invented
Put on more clothes, Kate. The window in our room ______ yesterday. 
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A
was broken
B
are broken
C
have broken
D
will break