＿＿＿＿＿ is our duty ＿＿＿＿＿ the environment.
| A．This; protect | B．It; to protect |
| C．This; protecting | D．It; protect |
—Where is Linda?— She may be at home. But I’m not sure it.
A. at B. about C. with
—Is she going to beactor?
—Yes. She is taking lessons on weekends now.
A. a, actor B. an, actor C. an, acting
— My New Year’s resolution is to travel to Qingdao.—.
A. That sounds great
B. Sorry to hear that
C. Sure
The boy wants to be a(n) . He studies math really hard.
A. writer B. cleaner C. engineer
— does he want to be when he?
—He wants to be a computer programmer.
A. What, grows up
B. How, grows up
C. What, grow up