–Mom, may I play the computer games for a while?
-- _________! Dad is in the study．
| A．Help yourself． | B．It’s up to you． |
| C．Behave yourself． | D．Go ahead． |
Who is it up ____ decide whether to go or not?
| A．to to | B．to | C．for to | D．to for |
Wang Mei is one of many Chinese teenagers _____ “on the go”
| A．who lives life | B．who live life | C．that lives living | D．that live living |
The two boys fought and fought until one ______.
| A．gave up | B．gave in | C．gave | D．gave off |
He will _____ our class to sing at the school singing contest.
| A．take place of | B．stand for | C．represent | D．representative of |
They told us that these small apples are often sweeter than big ____.
| A．those | B．one | C．that | D．ones |