I don’t mind picking up your things from the store _________ the walk will do me good

Kevin, I can’t use my new washing machine. Can you show me how to use it— Why not read the _____first I am busy now.

The population of many Chinese cities has _________ doubled in the past 30 years

Could you tell me ________ My watch doesn’t work.

.My brother wants to work in the factory which ______ still ______.