_____ at the door before you come into the room.
| A．Hit | B．Knock | C．Touch | D．Strike |
— Do you remember _________ he came？
— Yes. I do，he came by car.
| A．how | B．when | C．that | D．if |
— I drove to Zhuhai for the air show last week.
— Is that _________ you had a few days off？
| A．why | B．when | C．that | D．where |
It is generally considered unwise to give a child _________ he or she wants.
| A．however | B．whatever | C．whichever | D．whenever |
_________ the meeting will be held in Beijing is not known yet.
| A．Whenever | B．If | C．Whether | D．That |
_________ we can’t get seems better than _________ we have.
| A．What； what | B．What； that | C．That； that | D．That； what |