________，he talks a lot about his favorite singers after class.
| A．A quiet student as he may be |
| B．Quiet student as he may be |
| C．Be a quiet student as he may |
| D．Quiet as he may be a student |
---I fell off my bicycle and broke my leg yesterday．
---Is that ____ you drank too much？
| A．why | B．how | C．because | D．when |
_______ no buses , we have to walk home．
| A．There were | B．There being | C．It was | D．It being |
_______ to the left , and you will find the post office．
| A．Turning | B．Turn | C．To turn | D．Turned |
_______ many times , he still couldn’t understand it．
| A．Told | B．Having been told |
| C．He was told | D．Though he had been told |
All their attempts to rescue the child from the burning building were ______．He dies soon afterwards．
A．in place B．in return C．in vain D, for