It was with the selfless help of our teacher ______ we realized our dream.
| A．that | B．who | C．when | D．how |
Mary wanted to travel around the world all by herself, but her parents did not _______ her to do so.
| A．forbid | B．permit | C．follow | D．ask |
Good technique in medicine means less pain and fewer deaths and, ______ it’s our duty to master it.
| A．naturally | B．therefore | C．particularly | D．similarly |
In the group discussion, they thought up three different __________to solving the environmental problem.
| A．approaches | B．means | C．ways | D．methods |
The population of India has ______ quickly, because they don’t have a Family Planning policy like China.
| A．extended | B．developed | C．expanded | D．spread |
As our country has realized the problem and taken some measures, the price of medicine has _______ and poor people can also afford good medicine.
| A．gone down | B．brought down | C．turned down | D．cut down |