—Excuse me. Look at the sign： NO SMOKING! —Sorry, I________ it.
| A．didn’t see | B．don’t see |
| C．wasn’t see | D．won’t see |
My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
| A．ride, driving | B．ride, drive |
| C．riding, drive | D．riding, driving |
When he saw the poor conditions in the school, he decided to ______ some teaching instruments for them.
| A．offer | B．provide | C．give | D．bring |
The flight to New York was ________ because of the heavy fog.
| A．put off | B．put away | C．put out | D．put up |
—What did you talk about just now?
—My father asked me ___________.
| A．whom I was going to Shanghai with |
| B．where am I with my friends |
| C．when would I go home |
| D．if I have finished my homework |
______ you say sorry to your uncle, he won’t forgive you.
| A．Although | B．Unless | C．If | D．Since |