下列括号中对句中加点的词的解释，完全正确的一项是（ ）

Where did you buy this beautiful skirt? — It was in the shop ______ my mother is working.

Who taught herFrench?—! She learned it by herself.

There are four ______ students in myschool.

Why haven’t you bought a car, Mr Lin You can one.—Well, I have money for it, but I want to go green.