--Let’s go fishing if it ______ this weekend. --But nobody knows if it ______.
—Where did you go _____ vacation? — I went to Hong Kong.A. for B. in C. on
—_______does he go shopping? — Twice a week.A. How often B. How C. How long
There will be _____ jobs for people in the future, because more robots will do the same jobs as people.A. many B. less C. fewer
Why not ______ the old women? They need us.
Sarah always makes her son _______ his hands before eating.