---Alice, you look puzzled, Have you understood it?
---No．I _____another problem just now．
| A．l have thought of | B．am thinking of |
| C．had thought of | D．was thinking of |
Some of my friends eat with their eyes. They prefer to order what ______ nice.
| A．feels | B．smells | C．looks | D．tastes |
I had to call a taxi because the box was ______ than I’d expected.
| A．heavy | B．heavier |
| C．the heavier | D．the heaviest |
—What would you do if it ______ tomorrow?
— We have to carry it on, since we’ve got everything ready.
| A．is raining | B．rains | C．will rain | D．rain |
You don’t know ______ I want to see you again. It’s a year since I last saw you.
| A．how soon | B．how long |
| C．how often | D．how much |
—She has gone abroad, ______?
—No. She is still teaching us English at our school now.
| A．is she | B．isn’t she |
| C．has she | D．hasn’t she |