The missing boy was last seen_____ near the East Lake.
| A．playing | B．play | C．played | D．to play |
.
It is written clearly in the requirements that all passengers______check onto board thirty minutes before the plane takes off.
| A．may | B．can | C．will | D．shall |
.
The size of the audience, ______we had expected, was well over one thousand.
| A．whom | B．who | C．which | D．as |
.
______the zoologists tried to prove was that the photo of the South China Tiger had been staged or technologically dealt with.
| A．That | B．Why | C．Whether | D．What |
.
It is______the customers’ needs that has made chain stores so popular in big cities in China.
| A．meeting | B．met | C．to have met | D．being met |
.
Out of the crowded bus______,who was dressed in a black suit and waved to a woman.
| A．a tall man in his thirties stepped | B．stepped a tall man in his thirties |
| C．did a tall man in his thirties step | D．did a tall man step in his thirties |