He's been here for 10 years, _____?[ ]
A. is he
B. hasn't he
C. has he
D. isn't he
答案:B
深圳证券交易所规定,会员通过交易单元不能操作的业务是()。
A.大宗交易
B.融资融券交易
C.股指期货交易
D.协议转让
You are running a fever . You ____ to see the doctor .
A.need go
B.must have gone
C.should go
D.can go