He did well in the examination. He _____ hard at his lessons..
| A．must have worked | B．can have worked |
| C．will have worked | D．has worked |
—Did you look up the time of trains to Shanghai?
—Yes, the earliest train is________ to leave at 5:30 am.
| A．likely | B．about |
| C．possible | D．due |
She stepped into the bedroom quietly_______ she might wake up her roommates.
| A．for fear that | B．so long as |
| C．on condition that | D．in order that |
Many people have been ill from a strange disease these days,________ we’ve never heard of before.
| A．one | B．that | C．it | D．this |
—He_______ to the meeting. Have you informed him of it?
—Sorry. I________to.
| A．hasn’t come; am going |
| B．didn’t come; have forgotten |
| C．hasn’t come; forgot |
| D．doesn’t come; will have |
It is not enough only________ the rules of grammar if you want to learn English well.
| A．keeping in the mind |
| B．to keep in mind |
| C．to keep in your mind |
| D．keeping in your mind |