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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】When you do not understand a word,you can _in this dictionary.[ ]
A.
look it up
B.
look them up
C.
pick it up
D.
pick them up
【单选题】I watched the man for a long time and wanted to know.
A.
whether I have seen him before
B.
where I had seen him before
C.
that I had seen him before
D.
when did I see him
【单选题】Tony went to school ______ he had a bad cold. What a hard working boy![ ]
A.
if
B.
because
C.
though
D.
so
【单选题】—May I speak to Jack?—Sorry, be _____ Macao and he will be back in three days. [ ]
A.
has been to
B.
has gone to
C.
has been
D.
has went to
【单选题】Dad, you should tell Tom _________ with his friends.[ ]
A.
don't fight
B.
don't to fight
C.
not fight
D.
not to fight