It was __________ computer games that cost the boy a lot of time __________ he ought to have spent onhis lessons.
| A．played; that |
| B．playing; when |
| C．to have played; which |
| D．playing; / |
Itto me that I should go to attend a meeting when I was about to go home．
| A．happened | B．struck | C．occurred | D．reminded |
Milton didn’t chooseof the T-shirts and went away without looking at a third one.
| A．any | B．either | C．all | D．both |
No government can justly claim authority it is based on the will of the people．
| A．after | B．unless | C．so that | D．while |
The music sounded， the end of the class．
| A．indicating | B．indicated | C．to indicate | D．indicate |
Carbon
dioxidefrom burning fuels is the most common of the so-called greenhouse gases.
| A．produced | B．producing | C．to be produced | D．having been produced |