___________ should not be allowed to go out at night.
| A．Twelve-years -old | B．Twelve-year-olds |
| C．Twelve years old | D．Twelve year olds |
-- Could you tell me how long ______ the book? --Three days.
A.I can keepB. can I borrow C. can I keep
Do you notice the man ______ is sitting under the tree? He is our new teacher.
A. thatB. who C. whom
He swam in the river this summer. ________
A. So did he. B. So she did. C. So did she
Let’s go swimming to relax ourselves, _______?
A. do we B. will you C. shall we
Mother said to Joe, “ You should remember ______ play football on the street.”
A. don’t B. not to C. don’t to