The 31st Olympic Games will be held in Brazil ______ August 5th，2016．（ ）
A．inB．onC．at
--- 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 |
________ great scientist Qian Xuesen is!
| A．How | B．How a | C．What | D．What a |
（）I think _______ necessary for you _______ breakfast.
| A．this; have | B．that; to have |
| C．it’s; to have | D．it’s; have |