Use your head, _______ you’ll work out the problem.
| A．so | B．or | C．for | D．and |
In hot weather, an old tyre can break again easily it’s mended.
| A．when | B．where | C．which | D．that |
The early warning of floods, over the radio and on TV, spread quickly through the area.
| A．having broadcast | B．broadcasting | C．broadcast | D．to be broadcast |
After visiting China, most of the foreign friends said they would never forget the time _________they had spent in China.
| A．what | B．that | C．when | D．at which |
, I think, and the problem could be settled.
| A．If you don’t doubt your efforts | B．So long as you keep up your spirits |
| C．Making great efforts | D．A bit more efforts |
Nowadays, few people form the habit of keeping the habit of candles in the house in case of power .
| A．drop | B．lack | C．absence | D．failure |