【推荐1】On Taobao, customers________return goods if there are no questions asked, but they________pay delivery(快递) costs.

A．can't; can

B．must; must

C．can; have to

D．mustn't; can

【推荐2】The man over there _________ be Mr. Green. He has gone to New York on business.

A．may not

B．needn’t

C．can’t

D．mustn’t

【推荐3】You ________walk across the road because the traffic light is red.

A．needn’t

B．mustn’t

C．couldn’t

D．don’t have to

【推荐1】—Pardon me. Could you tell me how I can get to the railway station?
—Turn left and then follow your nose. You ________ miss it!

A．can’t

B．mustn’t

C．shouldn’t

D．needn’t

【推荐2】— It' s convenient that people _________ take money with them when they go shopping nowadays.
— That's right. Thanks to the popularity of electronic payment.

A．can't

B．shouldn't

C．needn't

D．mustn't

【推荐3】— What’s the good point of shopping online?
— I think buyers ________ spend too much time going to shops.

A．needn’t

B．mustn’t

C．can’t

D．shouldn’t

【推荐1】A one-way ticket to the shopping center __________ 30 yuan, and you __________ another 20 yuan for a round-trip.

A．costs; spend

B．spends; pay

C．pays; spend

D．costs; pay

【推荐2】—________ the picture, please!     
—Sorry, I can’t ________ it.

A．See; see

B．Look at; see

C．See; look at

D．Look; look

【推荐3】—Is the sports watch Mary’s?
—It ________ be hers. She is the only one who wears the sports watch in our class.

A．can’t

B．must

C．might

D．could