It is reported that the police will soon __________ the case of two missing children.
| A．look upon |
| B．look after |
| C．look into |
| D．look out |
一I like a pen which well．
一Will this one？
| A．writes；work | B．is written，do | C．writes；do | D．is written；work |
After retiring，he was recommended to gardening as a hobby．
| A．take up | B．take on | C．take off | D．take away |
—You ought to have called him yesterday．
—Yes，I know I．
| A．ought to | B．have to | C．should have | D．must have |
Persons under 16 not be employed in our country．
| A．shall | B．can | C．may | D．will |
—I’m sorry I have failed again in the math exam．
—？You’ve been working hard at the subject．
| A．How | B．How come | C．Why not | D．When |