I tried to work on, but I was so tired that I could no longer ___.
| A．hold out | B．keep out | C．stick to | D．insist on |
_________along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me.
| A．Driving | B．When I was driving | C．I was driving | D．Having driven |
Besides proper diet, exercise is one of the key ___________of a healthy lifestyle.
| A．categories | B．components | C．ranges | D．processes |
After ten hours’ drive, we came to ______ is called a green house, through the glass wall of _____, we saw lots of green plants.
| A．where, which | B．that, that | C．what, which | D．where, that |
—Mother, I climbed up to that tall tree and picked this big apple.
—Jesus! You______ down and hurt yourself.
| A．might have fallen | B．might fall | C．must have fallen | D．must fall |
—Do you remember when I first met you?
—Of course. I __________ in a small food factory.
| A．worked | B．was working | C．had been working | D．work |