—Listen, our music teacher is singing in the office.
—It__________be our music teacher. I saw her leave school a few minutes ago.
A.can't B.doesn't C.mustn't
You have to be used to__________more vegetables from now on because you used to__________too much meat.
A.having; having B.having; have C.have; having
The disaster area (灾区) needs food and clean water.__________.
A.Much, better B.The much, the better. C.The more, the better
—__________is it from here to high-speed rail station?
—About five kilometers.
A.How long B.How far C.How much
The police warn people__________after drinking wine.
A.not drive B.don't drive C.not to drive
The books are__________paper and the paper is__________wood.
A.made of; made from B.made from; made of C.made in; made by
