---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
We offered these students a summer course , aimed _____ improving their spoken English．
A．to B．in C．at D．for
