一、答案
| 1 | 2 | 3 | 4 | 5 | 6 |
| B | C | C | A | D | B |
二、答案
1. simply
2. finding
3. to buy
4. to come
5. useful
6. safe
7. simply
三、答案
1. trouble/difficuky finding
2. if/whether she
3. No matter when
4. are of great use
四、答案
(1) On the one hand
(2) On the other hand
(3) to practice
(4) excellent
(5) Whether
(6) wake up
(7) the best time to
(8) environment