the answer is A,tellme why ,why not use Bthough the plan was difficult to ___,it ___wonderfullyA carry out; worked out B be carried out ; worked out C carry out ; was worked out
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the answer is A,tellme why ,why not use Bthough the plan was difficult to ___,it ___wonderfullyA carry out; worked out B be carried out ; worked out C carry out ; was worked out
the answer is A,tellme why ,why not use B
though the plan was difficult to ___,it ___wonderfully
A carry out; worked out B be carried out ; worked out C carry out ; was worked out
the answer is A,tellme why ,why not use Bthough the plan was difficult to ___,it ___wonderfullyA carry out; worked out B be carried out ; worked out C carry out ; was worked out
the plan was difficult to carry out表示这个计划费尽千辛万苦才浮出水面,用主动表示其出现
the plan was difficult to be carried out 强调这个计划被他人实现,
be difficult/easy to do 是固定搭配 用主动表被动.
这里the plan was difficult to carry out更合适,更符合语境
（1）A. carry out “执行”、“完成”之意。carry out the plan，是最恰当的搭配；
（2）sth. is difficult to do sth. 是习惯说法，无须用被动语态；