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【单选题】
There are _____ different plants in the forests. [ ]A.
five thousands
B.
thousands of
C.
five thousands of
D.
thousand of
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【单选题】（辽宁卷） 23 ． Susan decided not to work on the program at home because she didn’t wanther parents to know what she __________.
A.
． has done
B.
． had done
C.
． was doing
D.
． is doing
【简答题】3 4 = () 8 =21÷______=______：24=______%．
【单选题】The football player felt extremely _____________ after they won the game.
A.
luck
B.
lucky
C.
luckily
D.
unlucky
【单选题】Susan decided not to work on the program at home because she didn’t want her mother to know what she _____.
A.
has done
B.
had done
C.
was doing
D.
is doing
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