With all his money, he ________ worry about a little thing like 5 cents!
| A．can | B．must |
| C．may | D．should |
20．He took much pain-killer last night, thus ______ his headache.
| A．relieving | B．to relieve | C．relieve | D．relieved |
19．China is a great country with a long history, ______ we all know it.
| A．as | B．so | C．but | D．and |
18．Development of economy ______ which our country attaches great importance, has drawn the attention of the whole world.
| A．with | B．for | C．to | D．in |
17． ______ others might have been satisfied, Dawson had higher ambitions.
| A．What | B．Why | C．Which | D．Where |
16．The dying man moved his lips as if ______ something, but it was too late for him to let out a single word.
A. to say B saying C. said D. having said