The police have started an ___ into the cause of the fire which broke out in the hotel last night.
| A．appreciation | B．investigation | C．operation | D．extension |
The old woman has a son and two daughters, andare college students now.
| A．all of whom | B．both of whom | C．all of them | D．both of them |
How many times has the college been?
| A．added to | B．added | C．added up | D．adding to |
comes back first should win the prize.
| A．Those who | B．Anyone | C．No one | D．Whoever |
The old dictionary is stillsome use to us.
| A．of | B．with | C．in | D．on |
---Where is my new football shoes, Mum? I need them to play football with my friends.
---I haven’t seen them. You ____ somewhere in your room.
| A．ought to put it | B．might put it | C．must put it | D．may have put it |