Tom wants to be engineer when he up.
| A．an, grows | B．an, will grow |
| C．a,is growing | D．／，grow up |
【2013四川遂宁】―Must I return the book this week?
― No, you . You can it for 20 days.
A. mustn’t, keep
B. needn’t, borrow
C. needn’t, keep
【2013浙江舟山、嘉兴】Drivers ________ wear seat belts while theircars are running on the road.
| A．need | B．can | C．must | D．may |
【2013江苏徐州】—Can I borrow your ruler，please?
—Yes，you . But you must return it to me before lunchtime.
| A．have | B．can | C．must | D．used to |
【2013福建泉州】— Have you decided where to go for your summer vacation?
—Not yet. We _______go toQingdao. It's a good place for vacation.
A. mayB. needC. must
【2013山东莱芜】Students in our school ________ know shouting is not allowed in the library.
| A．can | B．may | C．must | D．need |