—I hear Kris had an accident as he was riding his bike to school yesterday.
—________？ He is always so careful when he is riding.
| A．What for | B．How come |
| C．Why that | D．So what |
Tsinghua University, ________in 1911, is home to a great number of outstanding figures.
| A．found | B．founding |
| C．founded | D．to be founded |
Attention! Before the plane________，passengers will have thirty minutes to board.
| A．takes off | B．gets off | C．gets into | D．takes out |
In________，people in that village were very poor.
| A．1920s | B．the 1920s | C．1920's | D．its 1920s |
—Will you give this bag to Mr.Li?
—Sorry，I can't. He________.
| A．doesn't any more work here |
| B．doesn't any longer here work |
| C．doesn't work any more here |
| D．doesn't work here any longer |
Usually I don't allow________in my office，but yesterday I allowed him________ here.
| A．smoking；to smoke | B．smoking；smoking |
| C．to smoke；smoking | D．to smoke；to smoke |