Ⅰ.词语运用
用所给词或短语的适当形式填空。
a series of in vain on sale turn into look frightened insist on suffer from
1. When you speak into the telephone, the sound waves of your voice________ electricity signals.
2. So, pretending to________ ,I backed toward the door.
3. We tried to persuade him to change his mind, but________ .
4. The book went ________ on August.
5. This area often ________ drought.
