“Tom,___rubbish into the river.You’re polluting it,”said Mrs White.

David is imaginative . He usually good ideas . — Yes , He’s used to using his head at all times

Shall I inform him of the change of the schedule right now?— I am afraid you ________, in case he comes late for the meeting. [ ]

So far this year we __________ a rapid rise in food prices by between 10 and 20 percent．

Hardly ________ when she ________ someone knocking at the door.