It is rather that we still do not know how many species there are in the world today.
| A．misleading | B．embarrassing |
| C．boring | D．demanding |
The purse found in the supermarket matches the______ by Tom, so it must be his.
| A．impression | B．imagination | C．which | D．what |
I am wondering ___________he expects will win the gold medal in Men’s Sing.
| A．whom | B．who | C．which | D．what |
－Shall I give you a ride since you live so far away?
－Thank you.______________。
| A．It couldn’t be better. | B．Of course you can. |
| C．If you like. | D．If you are convenient. |
I _______ the dance performance many times, each giving me a new understanding.
| A．watch | B．watched | C．have watched | D．am watching |
The economic impact study was conducted by a group of _______ selected MBA students at the University of Kansas.
| A．especially | B．specially | C．regularly | D．potentially |