The weather in the south is generally warm, but it________ be very cold sometimes.

—May I use your computer, Mr WU?　　　—______．

---- May I smoke here?--- If you      , choose a seat in the smoking section.

These days some young people just ________ work hard because they have got used to the easy life provided by their parents.

 ——Can I get out in the daytime?——No. The school rules state that no child _____ be allowed out during the day, unless accompanied by an adult.