题目内容
(请给出正确答案)
[单选题]
You should make _______ your house or flat is secure.
A、sure
B、certain
C、understanding
D、knowledge
答案
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A、sure
B、certain
C、understanding
D、knowledge
第1题
A.focus
B.object
C.preserve
D.fix
第2题
A、to pass
B、passing
C、how to pass
D、how you should pass
第3题
B.It's all right
C.Yes, may I help you
D.It doesn't matter
第5题
A. looked over
B. found out
C. held up
D. stuck to
第6题
A. make
B. have
C. avail
D. advantage
第7题
B、should not follow
C、mustn’t have followed
D、hadn’t followed
第8题
A.正确
B.错误
第9题
A、may climb
B、must have climbed
C、could climb
D、should have climbed
第10题
A、must be
B、must have been
C、could be
D、should have been