When I try to understand that prevents so many Americans from being as happy as one might expect, it seems that there are two causes.
| A．why it does | B．what it does | C．what it is | D．why it is |
—I don’t go to work yesterday afternoon because my car broke down.
—You _______ mine. I wasn’t using it then.
| A．might borrow |
| B．could have borrowed |
| C．must have borrowed |
| D．ought to borrow |
She can’t help ________ the house because she’s busy making a cake.
| A．to clean |
| B．cleaning |
| C．cleaned |
| D．being cleaned |
—I’ve never found a better job.
—________.
| A．I don’t think so. |
| B．Too bad |
| C．Congratulations |
| D．Don’t worry |
After ten years of hard work, they at last got ________.
| A．out of debt |
| B．into debt |
| C．in debt |
| D．out of debts |
She usually ________ creative imagination with intelligence to creat some wonders.
| A． connect |
| B． joins |
| C． combines |
| D．associate |