I told Sally how to get here, but perhaps I ______for her.
| A．had to write it out | B．must have written it out |
| C．should write it out | D．ought to have writte it out |
The government has taken some measures to reconstruct the earthquake-hit areas, but it must be some time ________ everything returns to normal.
| A．since | B．after | C．unless | D．before |
________ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
| A．Examining | B．Examined |
| C．Being examined | D．Having been examined |
We agreed to accept ________ they thought was the best professor in the college.
| A．whatever | B．whomever | C．whichever | D．whoever |
I don’t know who invented ________ telephone. It’s really ________ most useful invention.
| A．the; a | B．/; a | C．a; the | D．/; the |
I know a little bit about the city as I __________ there for one year in my youth.
| A．am studying | B．had studied | C．studied | D．have studied |