12. ____ that he is only a beginner, it is understandable for him to make such mistakes.

　 A. Considering　 　　 B. Considered　 　 C. Consider　 　　　　　　　 D. To consider

11. These two areas are similar ____ they both have a high rainfall during this season.

A. to that　　 　　　　　 B. besides that 　　　 C. in that　　 　　　　　　　 D. except that

10.The protection device can help to eliminate the possible faults ______they cause more

damage.

　 A. unless　　　　 　 B. although　　 　 C. until　　　　　 　　　 D. before

9. Don’t go to the party until ____.

A. invite　　 　　　　　 B. invite to　　 　 C. invited to　　 　　　　 D. to invite

8. ___ you understand this rule, you will have no further difficulty.

A. Before　　　 　　　　　　　 B. While　　　 　　 C. As　　　 　　　　　　　　 D. Once

7. The thief ran ____ he was out of sight in a short while.

A. so fast that　　 　　 B. too fast that　　 　　　 C. fast enough that 　　　 D. such fast that

6. Roses need special care _____ they can live through winter.

A. because　　 　　　　 B. so that　　 　　　 C. even if　　 　　　　　　 D. as

5. Mike acted ___ nothing had happened.

A. as　　　 　　　　　　 B. as though　　 　 C. as although　　　 　　 D. just like

4. I will let you drive ___ you have a driving licence.

A. unless　　 　　　　　 B. except　　 　　　 C. on condition that　 　 D. so that

3. ___ I admit that the problems are difficult, I don’t agree that they cannot be solved.

A. Since　　 　　　　　 B. As　　　 　　　　　 C. Even though　　 　　　 D. Because