She felt very nervous as so many eyes were ____________ her.
| A．fixed at | B．looked on | C．focused on | D．watched |
. Sales of CDs have greatly increased since the early 1990s, when people ________ to enjoy the advantages of this new technology.
| A．begin | B．began | C．have begun | D．had begun |
The city is built _____ two rivers come together.
| A．in which | B．which | C．where | D．that |
You are wanted ___ phone.
| A．by | B．on | C．at | D．in |
The house is lighted ____ electric light.
| A．by | B．to | C．in | D．with |
All of us had a good laugh ____ that funny story.
| A．at | B．on | C．over | D．to |