---What should I do for the health of my teeth, doctor?--- Well, it’s best to ______ your teeth before you go to bed.
It’s December now. In _____ three weeks, we’ll have our winter holiday.
-- Mom, when shall we go to Dongying Museum this weekend? -- Oh, sorry. I'm going to Beijing for a meeting. ___Saturday __ Sunday is OK.
Mike replied, with a big smile, "Oh, you_______ to worry about them."
News came that the Netherlands launched its first-ever “intelligent bicycle”
---Excuse me, sir. Could you please tell me _______? --- Sorry, I don’t know. You can go to the information desk.