It every day so far this month. I can't tell you if it tomorrow.
| A．rained; rains | B．is raining; shall rain |
| C．has been raining; rains | D．has rained; will rain |
19．We’d better set off now, or it will be dark__________we know it.
| A．until | B．after | C．when | D．Before |
18．Mary said she didn’t care anything about John, but her red face________.
| A．gave her away | B．put her away | C．got her away | D．threw her away |
17．—Is there any better way to help my son get rid of the habit of playing computer games?
—To tell you the truth, it’s very hard. But we_______on this problem to improve the situation.
| A．were working | B．had worked | C．are working | D．had been working |
16．—Where is Lily, Lucy? I cannot find her anywhere.
—She_________have been off long. I saw her clean the window just now.
| A．shouldn’t | B．can’t | C．mustn’t | D．needn’t |
15．While he has failed again and again, he never gives up in order to________his dream.
| A．achieve | B．awake | C．admit | D．Control |