There is______ “u” and ______ “s” in the word “use”.

Don’t worry about the kids. I think they can do it ________.

Simon is looking forward to _________ the football match between China and Brazil on TV this evening.

It ________ about eight minutes for sunlight (阳光) to travel from the sun to the earth.

Liu Yang is the first Chinese woman astronaut ______ has ever traveled in space.