—_________ will Changzhou Metro Line 2 start to use?
—_________ the end of this year.
A.How long; Not until B.How long; Until C.How soon; Not until D.How soon; Until
_________you've tasted it, you can't imagine how delicious the dish is.
A.Though B.However C.Unless D.If
_______ the help of others, the boy could swim ________ the river successfully.
A.Under; across B.With; across C.Under, through D.With; through
--- Excuse me, sir. But smoking is not allowed here.
---Sorry, I didn't see the sign. I'll _______ my cigarette at once.
A.put out B.put away C.put up D.put off
—Your DIY work is so wonderful.
—I had worked for 10 hours _________I finished making.
A.when B.after C.since D.before
Make sure that all the waste is and safely dealt with.
A.actively B.closely C.properly D.simply
