That be Mary． She has gone to Changsha on business． （ ）
A．can'tB．mustC．may
I don’t think it is a good idea, ________ ?
A. isn’t it B. is it C. do we
Some of the apples are bad,but I believe the rest sweet.
| A．taste | B．tastes | C．are tasted | D．is tasted |
--- Can you tell me where Tom is? --- He ________ on the playground.
A. plays B. playing C. is playing
-- _______ bad weather! -- So it is.
A. What B. How C. What a
What _____ it is to go horse riding __________ weather!
| A．a great fun; on so fine |
| B．great fun; on such a fine |
| C．a great fun; in so fine a |
| D．great fun；in such fine |