It's not easy to change habits，________ with awareness and self－control，it is possible.
| A．for | B．or | C．but | D．so |
. In order to learn the of the family business, Bill took a job as messenger boy in one of the offices.
A. ins and outs B. dos and don’ts C. heads and tails D t’s and i’s
Shelly had prepared carefully for her English examination so that she could be sure of passing it on her first .
| A．intention | B．attempt | C．purpose | D．desire |
It snowed heavily for three days and they were separated from the outside world.
| A．in the end | B．on end | C．by the end | D．at the end |
everyone can hear the speaker there is no of turning up the radio.
| A．Now that; point | B．Even if; point | C．Now that; need | D．Even if; need |
If it was not an accident, he must have done it .
| A．on purpose | B．in common | C．on occasion | D．in time |