It may be necessary to stop _____ in the learning process and go back to the difficult points in the lessons．
| A．at intervals | B．at random |
| C．at ease | D．at length |
47. I'd like to go with you., I have to finish the report now.
| A．However | B．But | C．And | D．So |
46. Oh, you can’t go out now. It is raining very _____. You’d better stay here for a while.
| A．largely | B．bigly | C．greatly | D．heavily |
45. If the wind doesn’t _____ before three o’clock, we will not be able to take off today.
| A．do up | B．go down | C．go by | D．go out |
44. The soldier gave _____ the secret when they punished him.
| A．up | B．back | C．out | D．Away |
43. How are you getting ____ with each other?
| A．on | B．back | C．in | D．Through |