–Which hair band do you like best, madam?
–I can’t decide now. I really don’t know _________.
| A．to choose which one | B．choose which one |
| C．which one to choose | D．which one I should choose it |
—What was Tom doing _______ it was raining?
—He was doing his homework in the bedroom.
| A．since | B．while | C．when | D．if |
Yesterday, a man said he saw _______ UFO in the park. The police are looking for _______ UFO now.
| A．an; the | B．the; the |
| C．a; the | D．the; an |
He _______ eight hundred thousand dollars for his Benz(奔驰) car.
| A．paid | B．cost | C．took | D．spent |
She told us that she _______ her handbag on the bus.
| A．left | B．forgot | C．missed | D．failed |
—_______? —My watch doesn’t work.
| A．Why are you here | B．How do you do |
| C．What’s wrong | D．What’s this |