____ several times, the young scientist still kept on doing his experiments.
| A．Having failed | B．Having been failed | C．Failed | D．To fail |
—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 |
In the dark street, there wasn’t a single person ______ she could turn for help.
| A．that | B．who |
| C．from whom | D．to whom |
29. The cinema is equipped with the modern equipment and comfortable seats, but ______, nobody iing in.
| A．somehow | B．however |
| C．instead | D．therefore |