We were told not to touch the equipment in the laboratory unless ________.
| A．allowed to do | B．allowing to do | C．allowed to | D．allowing to |
People who are ______ drugs can’t go without them for a few hours , can they ?
| A．addicted to | B．engaged in | C．satisfied with | D．related to |
Could you drive me to the supermarket at noon if ______?
| A．it’s convenient of you | B．you are convenient |
| C．it’s convenient to you | D．you will be convenient |
______ the matter a secret , Jim told his father all that had happened .
| A．More than keep | B．Rather than keep |
| C．Rather than keeping | D．Without having been kept |
----- Where was I ?
------ You _________you didn’t like your father’s job.
| A．had said | B．said | C．were saying | D．had been saying |
He always brings me a pretty gift ____ he comes to visit me.
| A．by the time | B．sometimes | C．every time | D．at times |