The home ________ the lion is Africa while the koala bear is native ________Australia.
| A．of；of | B．to；to |
| C．of；to | D．to；of |
18．_________a US visitor visa twice, the old couple finally gave up their hope of going to America to experience Thanksgiving Day.
| A．Having been refused | B．Being refused | C．Having refused | D．To be refused |
17．If Tom finds a favourite song, he may want to hear it over and over again to the point_________everyone else is sick of it!
| A．which | B．that | C．where | D．When |
16．－Governments at all levels have to take measures to improve the quality of basic education.
－Exactly. _________, students' homework must be greatly reduced.
| A．That's to say | B．What's more | C．Believe it or not | D．In a word |
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 |