__________ a strange plant! I've never seen it before.
| A．Which | B．What |
| C．How | D．Whether |
By the end of 2007, about half a million peo
ple had flooded into the city, ____ up around 10 percent of its total population.
| A．make | B．made | C．making | D．to be made |
We must avoid _____ a bad impression on others in public places .
| A．to leave | B．leaving | C．to have left | D．leave |
The ______ boy was last seen ____ near the East Lake.
| A．missing; playing | B．missing; play | C．missed; played | D．missed; to play |
– Have you heard that Tom, along with his parents, ______ to Japan?
-- Really? No wonder I haven’t seen him these days.
| A．has been | B．has gone | C．have been | D．have gone |
Try to spend your time just on the things you find ______.
| A．worth doing them | B．worth being done |
| C．worthy of doing them | D．worthy of being done |