当别人感谢你时,你应该说:________A.Thank you.B.you are welcome.
_____ she need a computer.A. Do B. Does C. Is
I am sending these postcards ____ Canada.A. in B. on C. to
Where _____ the traffic lights?A is B. are C. have
We buy stamps ______ .A. at the post office B. in a bicycle shop C. in a restaurant
She ____ a stamp for his letterA. need B. needs C. to need.