With his work________,the businessman stepped back to his seat, feeling pleased that he was a man of action.
| A．completing | B．to complete | C．completed | D．completes |
-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 Ifor Africa.
| A． | have left | B． | leave | C． | left | D． | will leave |