It was foolish of him to _____ his notes during that important test, and as a result, he got punished.
| A．stick to | B．refer to | C．keep to | D．point to |
His sister left home in 1998, and __________ since.
| A．had not been heard of |
| B．has not been heard of |
| C．had not heard of |
| D．has not heard of |
—Mum, could I go out to play now?
—Let me see. . . Yes,__________ you have finished all your school assignments.
| A．until |
| B．unless |
| C．while |
| D．since |
—Does your father smoke?
—No , it's two years __________ he smoked.
| A．before |
| B．since |
| C．after |
| D．when |
His wife always __________ him a hot drink of milk, sugar and chocolate.
| A．mixes |
| B．fills |
| C．connects |
| D．offers |
Do let your mother know all the truth, she appears __________ everything.
| A．to tell |
| B．to be told |
| C．to be telling |
| D．to have been told |