A.that
B.this
C.it
D.one
A.this
B.that
C.one
D.it
开始考试点击查看答案A.this
B.that
C.one
D.it
开始考试点击查看答案A.that; it
B.it; it
C.that; what
D.it; what
开始考试点击查看答案A.all
B.everything
C.it
D.themselves
开始考试点击查看答案A.this
B.that
C.there
D.it
开始考试点击查看答案A.one
B.it
C.some
D.them
开始考试点击查看答案A.What is required
B.What requires
C.It is required
D.It requires
开始考试点击查看答案A.it difficult; keep in touch
B.it hard; lose touch
C.difficult; get in touch
D.hard; be in touch
开始考试点击查看答案A.that; one
B.it; it
C.that; it
D.it; one
开始考试点击查看答案A.it
B.she
C.which
D.he
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