--- Had we been more careful, the accident might not have happened.
--- But we _____ at that time.
| A．hadn’t | B．didn’t | C．weren’t | D．might not |
Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the airport.
| A．why | B．because | C．where | D．that |
One is expected to behave _________ on some special occasions.
| A．accurately | B．precisely | C．appropriately | D．rightly |
—What do you think of Tom?
—He has been working very hard. ______ he is an advanced worker.
| A．No wonder | B．No doubt | C．No worry | D．No problem |
After seven hours’ drive, they reached ______ they thought was the place they had been dreaming of.
| A．that | B．what | C．where | D．which |
—Next Monday is my birthday.
—Is that so? ______
| A．I can’t believe my ears. | B．I’m so glad to hear that. |
| C．What presents do you want? | D．Many happy returns of the day! |