This dictionary, which I bought yesterday, has been highly _______ by my professor.
| A．acknowledged | B．appealed | C．recommended | D．commanded |
When I wanted to express my thanks to him，words ___ me. I just held his hands firmly and choked.
| A．left | B．fled | C．forgot | D．failed |
Not all ads are used to promote a product or to increase a company’s profits. Which is the following statement correct?
| A．All the ads are used to promote a product or to increase a company’s profits. |
| B．Neither of ads are used to promote a product or to increase a company’s profits. |
| C．Some of ads are used to promote a product or to increase a company’s profits. |
| D．None of ads are used to promote a product or to increase a company’s profits. |
With the help of high technology, more and more new substances ______ in the past 10 years.
| A．discovered | B．have discovered |
| C．had been discovered | D．have been discovered |
---Will Li Ming attend the concert by Jay Chou？
---No. He _____ for the coming speech contest lately.
| A. prepared | B. was preparing | C. has been preparing | D. has prepared |
Mr. Irvine, who ________ in a high school for forty years, is now living in retirement.
| A．had taught | B．taught | C．has taught | D．had been teaching |
－We could have asked Mr. Zhang for help. He is always ready to help others.
－I ________ that. A long time _______.
| A．have forgot, wastes | B．forgot, wasted |
| C．forgot, was wasted | D．forgot, has been wasted |
His sudden ______ of violent anger put an unpleasant end to the meeting.
| A．break | B．burst | C．attack | D．express |
— Has Sam finished his homework today?
— I have no idea. He ________ it this morning.
| A．did | B．was doing | C．has done | D．had done |
— How long have you been here?
— Only about five minutes. Henry and Simon ______ here with me.
| A．walk | B．have walked | C．walked | D．had walked |