PART TWO: LANGUAGE KNOWLEDGE
Section A
Directions: Beneath each of the following sentences there are 4 choices marked A, B, C and D. Choose one answer that best completes the sentence.
21. Trees are useful to man mainly in three ways, the most important of which is that they can protect ______ from droughts (干旱) and floods.
A. it B. itself C. himself D. Him
—Sorry, sir. And you'll let me pay to have your jacket cleaned, won't you?
—That's all right. Coffee ________ lasting marks on clothing, I'm sure.
| A．didn't leave | B．doesn't leave |
| C．hasn't left | D．hadn't left |
—How long on earth shall I have to wait?
—Sorry, sir. Just a minute. There ________ a table available.
| A．is | B．was |
| C．will be | D．has been |
When I ________ home, I caught a thief stealing from a passerby.
| A．headed | B．was heading |
| C．has headed | D．had headed |
Up to now, thousands of red phone boxes, the old image of Britain, ________ due to mobile phones.
| A．removed | B．have removed |
| C．were removed | D．have been removed |
This is a promising company as its employees ________ to think outside the box and develop creative solutions.
| A．encourage | B．have encouraged |
| C．were encouraged | D．are encouraged |