下列句子中，加点的成语使用不恰当的一项是（ ）

Mary I smoke here?— If you , choose a seat in the smoking section. [ ]

What have you done these days?— I’ve read all the books _____ you gave me because they are the best ones _____ are on the subject.

______ does he like science —Because it’s interesting.

It isn’t a difficult job. I think the children can do it by .