This dictionary, which I bought yesterday, has been highly _______ by my professor.

When I wanted to express my thanks to him，words ___ me. I just held his hands firmly and choked.

Not all ads are used to promote a product or to increase a company’s profits. Which is the following statement correct?

With the help of high technology, more and more new substances ______ in the past 10 years.

---Will Li Ming attend the concert by Jay Chou？
---No. He _____ for the coming speech contest lately.

Mr. Irvine, who ________ in a high school for forty years, is now living in retirement.

－We could have asked Mr. Zhang for help. He is always ready to help others.
－I ________ that. A long time _______.

His sudden ______ of violent anger put an unpleasant end to the meeting.

— Has Sam finished his homework today?　　
— I have no idea. He ________ it this morning.　　

— How long have you been here?
— Only about five minutes. Henry and Simon ______ here with me.