Viena is old city the river Danube.
| A．the; in | B．an; on | C．a; at | D．an; of |
— Must I finish my homework now?
— No, you ________. You can go home now.
| A．needn’t | B．mustn’t | C．shouldn’t | D．can’t |
— do you go to visit your grandparents?
— Once a week.
| A．How far. | B．How soon. | C．How often. | D．How long. |
—Linda, I called you this morning, but nobody answered the phone.
—I'm sorry. I a picnic with my family then.
| A．have | B．had | C．am having | D．was having |
—Would you like some juice or coffee?
— is OK. I really don't care.
| A．Both | B．Either | C．All | D．Neither |
— What do you think of physics?
— I think it’s ______ of all subjects.
| A．difficult | B．more difficult | C．most difficult | D．the most difficult |