they found （ ）difficult to deal with such a problem
选b it
解析:it 代替to deal with such a problem
give me this answer please
give me this answer please
they found （ ）difficult to deal with such a problem
a this
b it
c that
d those
they found （ ）difficult to deal with such a problem
a this
b it
c that
d those
英语人气：268 ℃时间：2020-03-24 08:12:55
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