Every year there are about _______ people waiting for their trains back home in the railway station before Spring Festival comes.
—Must I finish my homework before I go home?—No, you ________. But you ________ finish it before tomorrow.A.mustn’t, mustB. needn’t, mustC. needn’t, mustn’t
—Must we keep the window________ all the time? —No, you don’t have to.A. open B. opened C. Opening
James is _______ boy.A. a 18-month-oldB. an 18-months-oldC. an 18-month-old
Germs are very small. They can ________ the human body ________ the skin.A. get up, acrossB. get into, throughC. get into, across
If it ________ tomorrow, we will go to the zoo.A. isn’t rainB. doesn’t rainC. won’t rain