The reason______ he gave for being absent from school was ______ he had to attend his sick mother at home.
| A．which; because | B．why; because | C．不填; that | D．why; that |
The gentleman ______ you told me yesterday proved to be a thief.
| A．who | B．about whom | C．whom | D．with whom |
It was ______ computer games that cost the boy a lot of time that he ought to have spent on his lessons.
| A．to have played | B．playing |
| C．played | D．having played |
______ a reply, he decided to write again.
| A．Not receiving | B．Receiving not |
| C．Not having received | D．Having not received |
The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
| A．having written | B．to be written |
| C．being written | D．written |
Most common people desired that more attention _______ public opinion.
| A．pay to | B．paid to |
| C．was paid to | D．be paid to |