When the traffic lights are red , we should ____________ .A. stop B. go C. Wait
— Your shoes look so cool. Where ________ your shoes ________? — Shanghai.
We will celebrate the 90th birthday of the Chinese Communist Party _____ July 1st, 2011.
We must______ using plastic bags in order to protect our earth..
Parents often ask us _____ water in our life.
E - mail is very popular today. People hardly post letters, _____?