“（美国）全国篮球协会” 的英文缩略词是 .
A.NBA B.BBC C.CBA
Ms Liu likes wearing formal clothes, but his sister usually dresses ________.
| A．casual | B．casually |
| C．fashionable | D．in |
To keep the air fresh during the night, I often sleep with the windows on ________ it’s really cold.
| A．unless | B．if | C．because | D．when |
Renmin Road is always crowded with traffic and people, it’s one of the _______ streets.
| A．busy | B．busier |
| C．the busiest | D．busiest |
--- ____________________.
---The same to you!
| A．Happy birthday! | B．You speak good English! |
| C．Happy new year! | D．Have a good trip! |
Ok, class! Time is up! Please ________ your exam paper to the monitor!
| A．give away | B．put out |
| C．give up | D．hand in |