According to a recent survey, the ________ age of students of Senior Two is seventeen.
| A．common | B．ordinary | C．usual | D．Average |
Please be sure to telephone me next time you to our city .
| A．will come | B．come | C．came | D．are coming |
Let’s visit the bookstore on our way back home,？
| A．shan’t we | B．won’t you | C．shall we | D．will you |
I asked two people to help me start my car , but of them knew what to do .
| A．either | B．none | C．both | D．neither |
He took the machine to pieces to find out how it .
| A．progressed | B．operated | C．equipped | D．managed |
Americans eat ____ vegetables per person today as they did in 1910.
| A．more than twice as many | B．more than twice | C．as twice as many as | D．twice as many as |