They _________ the plane, or perhaps they have been prevented from coming for some reason.
| A．can have missed | B．can have lost | C．may have missed | D．may have lost |
The house rent is expensive．I’ve got half the space I had at home and I’m paying ______here．
| A．as three times much | B．as much three times |
| C．as much three times | D．three times as much． |
---Where ______ the recorder? I can’t see it anywhere．
--- I _______ right here．But now it’s gone．
| A．did you put; have put | B．have you put; put |
| C．had you put; was putting | D．were you putting; have put |
I really appreciate ________ to relax with you on this nice island．
| A．to have had time | B．having time | C．to have time | D．to having time |
---How do you deal with the disagreement between the company and the customers?
---The key ________the problem is to meet the demand________ by the customers．
| A．to solving; making | B．to solving; made |
| C．to solve; making | D．to solve; made |
Owing to over-drinking．his health is ____．
| A．decreasing | B．declining | C．increasing | D．promoting |