问题

Where ______ my books, Mom —I don’t know.
A:are
B:am
C:is
D:do;
B:am
C:is
D:do;
正确答案是:
同类题型
Briggs will ________as general manager when Mitchellretires.
_______ with care, one tin will last for six weeks [ ]
Nowadays people take___ exercise a day as they did in the past because of widely used automobiles
It was only when I reread his poemsrecently ______ I began to appreciate their beauty.