we keep our hearts open, we can experience the happiness friendship brings us.
| A．Since | B．If | C．Unless | D．Though |
Look! What a clean room! Who_______ it?
| A．has tidied | B．is tidying | C．will tidy | D．tidied |
Many students have to______ their hobbies because of their busy school work.
| A．stay up | B．put up | C．give up | D．look up |
Private cars are becoming very popular though most of them still ______too much
| A．pay | B．cost | C．sell | D．spend |
I looked everywhere for the book, but I ______find it
| A．mustn’t | B．needn’t | C．may not | D．couldn’t |
All the children like Mr. White very much because he often makes them________
| A．laughed | B．laughing | C．laugh | D．to laugh |