二、单项填空（共20小题; 每小题0.5分，满分10分）
12. --- Hi, Jack! The boss is hunting everywhere for you.
--- _____, Alice?
A. What is he doing B. How about having a cup of tea first
C. Why? What’s up D. What can I do for you
13. The farmers near cities are working ___ part of their land themselves and are letting _____rest to others.
A. a ; a B. / ; a C. / ; the D. a ; the
14. It is wrong to consider our work either as _____ good or as completely bad.
A. physically B. totally C. regularly D. logically
15. Don’t jump to a decision so easily, dear ! You must learn to consider all possible results _____ you begin to carry out your plan.
A. when B. before C. after D. until
16. The soldiers are hiding in the trees and waiting for the _____ to start firing.
A. signal B. mark C. sign D. symbol
17. If a person is _____, he feels sure about his own abilities, qualities, or ideas.
