－Do you know _______ World Water Day is?
－On March 22nd.
| A．when | B．where | C．what | D．which |
— Have you solved your problem?
— I’ve kept on thinking about that matter__________, but I have had no idea.
| A．at times | B．some time |
| C．at a time | D．all the time |
— What's wrong with my son, doctor?
— _________. Just a cold.
| A．Something serious | B．Serious something |
| C．Nothing serious | D．Serious nothing |
— _________ did you do with old books?
— I sent them to children in poor areas.
| A．How | B．What | C．Where | D．Why |
— What______useful dictionary for beginners of English! Where did you get it?
— I bought it in the bookshop.
| A．a | B．an | C．the | D．/ |
— I visited the Purple Mountain Observatory last Sunday.
—Why didn’t you tell me earlier?
| A．You did? | B．I hope so. |
| C．Have a good time. | D．It’s kind of you. |