Henry was away from home for quite a bit and _______ saw his family

They insist ______ playing music late ______ midnight.[ ]

_______ email is becoming more popular with many people, I still like writing to my friends.

Haven’t seen you for ages.Do you still work in Zhengzhou?—__. It’s two years since I worked there .

Experts say it is an international trend to__________ MP2.5 to check air quality.