His latest research is at the of genetic science.
| A．maiden voyage | B．cutting edge |
| C．focus group | D．daily basis |
The policemen entered a lonely village near Nam Co Lake, ______ they believed the suspect（嫌疑犯） was hidden somewhere.
| A．where | B．which | C．what | D．whom |
Most of the Chinese people are big savers — they get used to putting every penny in the bank ______ a rainy day.
| A．in need of | B．in charge of |
| C．in exchange for | D．in preparation for |
—Would you like to play basketball with me now?
—I’d like to, but I must have my work _______ today.
| A．finishing | B．to finish |
| C．finish | D．finished |
—How did you work out the Math problems?
—Not able to ________ such difficult problems on our own, we had to turn to the teacher for help.
| A．explain | B．handle | C．tolerate | D．select |
According to the art dealer, the painting _______ to reach 10 million dollars if it’s put on the market.
| A．was expected | B．has expected |
| C．is expected | D． will expect |