—When did you become a volunteer？
—I________in this group since 2008．
| A．joined |
| B．took part |
| C．have joined |
| D．have been |
【2013浙江宁波】That T-shirt _______ be expensive because it’s by a famous designer.
| A．can’t | B．mustn’t |
| C．must | D．should |
【2013重庆】Hurry up，or you ____catch the train．
| A．can’t | B．needn’t |
| C．mustn't | D．shouldn’t |
【2013浙江杭州】--Pauline has lost her phone.
–No. It’s in her bag. I _________ hear it.
| A．must | B．can | C．may | D．shall |
【2013山东临沂】—May I play computer games now, Mom?
—No. You finishyour homework first.
| A．must | B．can |
| C．could | D．may |
【2013山东烟台】—Whose book is this?
—It our geography teacher’s. You see,hisname is on it.
| A．can’t be | B．can be |
| C．mustn’t be | D．must be |