. He didn’t know _______ or stay.
| A．to leave | B．if that he should leave | C．if to leave | D．whether to leave |
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 |
The sunlight came in____________ the windows in the roof and lit up the whole room.
| A．through | B．across | C．by hour | D．each hour |
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 |
—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 |