His shop was so well managed that he sold in just 5 months ________ his competitor sold in a year.
| A．how | B．what |
| C．whether | D．why |
The house was reduced to _____by the fire _____by a cigarette butt.
| A． ash, cause | B．ashes, being caused |
| C． ash, being caused | D．ashes, caused |
It’s said too much noise can _____ people mad.
| A．have | B．let | C．drive | D．take |
Boys wear fashionable clothes. ______, some birds have bright feathers.
| A．Similar | B．Similarity | C．Similarly | D．likely |
______ the Internet is bridging the distance between people, it may also be breaking some homes or will cause other family problems.
| A．When | B．While | C．If | D．As |
The ship had 500 passengers _______.
| A．on board | B．on the board | C．on a board | D．on boards |