We tried ______ to persuade him to stay home, but at last, he went to the construction site despite his bad illness.
| A．in case | B．in vain |
| C．in fact | D．in addition |
15．A government, which is responsible for society, must_________to its people how important the method is to prevent AIDS.
| A．get through | B．get on | C．get over | D．get across |
14．Mum, you really need to have a. rest! You_________in the kitchen ever since you came back home three hours ago.
| A．had worked | B．were working | C．have been working | D．Worked |
13．A new simplified desktop computer has been developed for people aged over 60 to make them _________with PC and the Internet.
| A．familiar | B．aware | C．popular | D．Conscious |
12．We have to study for a bright future, so we have to lose some sleep_________we're worn out.
| A．in case | B．as though | C．as long as | D．even though |
11．Nowadays electrical energy_________from the sun has become the most widely used energy.
| A．comes | B．coming | C．to come | D．Came |