_____ the telephone number several times, but he couldn't learn it by heart．
| A．Having told | B．Having been told |
| C．Although he had been told | D．He had been told |
A number of new machines were introduced from abroad，______ an increase in production.
| A．resulted in | B．to result in | C．result in | D．resulting in |
Grades would______from one or two，for outstanding or excellent，to six or seven，for poor or very poor.
| A．suffer | B．differ | C．come | D．range |
—I hear Tom ______ playing games recently.
—______ no wonder he is easy to feel sleepy in class.
| A．is addicted to；There is |
| B．addicts；There is |
| C．addicts；It is |
| D．is addicted to；It is |
I was so excited at the news that I could hardly ______ my feelings in words.
| A．carry |
| B．convey |
| C．transmit |
| D．communicate |
Only by ______ your attention ______ what you are learning can you learn it well.
| A．focus；on |
| B．pay；on |
| C．focusing；on |
| D．paying；on |