He was ____tired _____he fell asleep as soon as he lay down.
— Why _____ most stars _____ in the daytime? — Because the sun is too bright.
Students _____ be allowed to use mobile phones at school. --------I agree.Phones can bring troubles.
Do you mean you will join the club? ----- Yes, I am _____ it.
My bike is broken.What should I do? You can get it _____ in that bike shop.
_____ playing computer too much is bad for your study and health.