I often have conversations with John over telephone, while keep in touch with Tom by__________ letter．
| A．不填;;the | B．不填;a | C．the;不填 | D．the; a |
The number of traffic accidents that _______ in developing countries _______ increasing.
| A．happen; is | B．happens; is | C．happens; are | D．happen; are |
--- Would you do me a favor and carry these books?
--- ________.
| A．Yes, that’s right | B．No trouble | C．No wonder | D．With pleasure |
_______ is necessary for you to lock the car when you don’t use it.
| A．What | B．This | C．It | D．That |
A small plane crashed into a hillside five miles east of the city, _______ all four people on board.
| A．killed | B．killing | C．kills | D．to kill |
My breakfast mainly ________ chocolate-covered biscuits and glasses of milk.
| A．consists of | B．makes up | C．makes of | D．consists in |