These problems，______ will seriously affect the growth of teenagers and even the nation's future.
| A．not if solved properly |
| B．if solved properly |
| C．not if properly solved |
| D．if not solved properly |
---You should have thanked her before you left．
---I meant ____ , but when I was leaving I couldn’t find her anywhere．
| A．to do | B．to | C．doing | D．doing it |
For breakfast he only drinks juice from fresh fruit ____ on his own farm．
| A．grown | B．being grown | C．to be grown | D．to grow |
---Sorry．I shouldn’t have been so rude to you．
---You ____ your temper but that’s OK．
| A．have lost | B．had lost | C．did lose | D．were losing |
-There is ______ like a holiday to make one feel relaxed．
-That’s _____ so many people enjoy themselves traveling．
| A．nothing; why | B．something; because |
| C．nothing; because | D．something; why |
Tell the children ______ there not to make so much noise．
| A．play | B．played | C．playing | D．to play |