The place is worth _________.
| A．pay a visit | B．paying a visit to | C．paying a visit | D．pay a visit to |
—Sorry, do you mind if I smoke here?
—Yes, _______.
| A．you could | B．go ahead | C．I do | D．my pleasure |
It’s the first time that he has been to Australia, _______ ?
| A．isn’t he | B．hasn’t he | C．isn’t it | D．hasn’t it |
Peter’s jacket looked just the same as Jack’s, but it cost _____ his.
| A．as much twice as | B．twice as much as |
| C．much as twice as | D．as twice much as |
Children need friends ______ their own age to play with.
| A．of | B．for | C．in | D．at |
My parents have promised to come to see me before I _______ for Africa.
| A．have left | B．leave | C．left | D．will leave |