—Could you tell me ________ ?
—A doctor. She saves and helps the sick.
A.what does your aunt do B.how is your aunt
C.how your mother does D.what your mother is
—Must we finish all the exercises in a week?
—No, you ________. Just learn thirty new words by heart.
A.needn’t B.can’t C.mustn’t D.shouldn’t
So far China ________ a lot of goods and materials（物资）to some foreign countries.
A.will give off B.gave in C.has given away D.gave up
—________ did it take to complete Huoshenshan Hospital in Wuhan, Hubei?
—Ten days! It’s a wonder!
A.How soon B.How far C.How much D.How long
Millions of Chinese students watched Internet course ________ they stayed at home.
A.when B.until C.although D.before
Hurry! The online class ________ for ten minutes.
A.has begun B.has been on C.began D.was
