题目内容
The machine has been used many years.It's no wonder that it doesn't work well ________.
- A.regularly
- B.constantly
- C.occasionally
- D.frequently
考查副词辨析。Occasionally“偶尔”;regularly“定期地”;constantly“不断地,经常地”;frequently“频繁地,经常地”。根据句意“这台机器用了好多年啦,难怪(它)偶尔不工作”。
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