--- May I smoke here?
--- If you , choose a seat in the smoking section.
| A．should | B．could | C．must | D．may |
So convenient ______and saves your time that many people would like to do that.
| A．is shopping on net | B．shopping on net does | C．does shopping on net | D．shopping on net is |
Have you ever seen a doctor? If ______, what happened?
| A．any | B．ever | C．not | D．so |
_______ on the top of the hill is a monument, dating back to hundreds of years ago.
| A．Having stood | B．Standing | C．Being stood | D．Having been stood |
______ the poor living conditions, they continue to gather in the suburban villages because of low rents and easy transport.
| A．Except | B．Instead of | C．Despite | D．In case of |
The truck ran down the hill, and the driver _____, according to the local newspaper, to have been killed.
| A．was reported | B．was reporting | C．reported | D．had been reported |