Although he is ____ boy ,he knows a lot about the universe.A. a eight-year-oldB. an eight-years-oldC. an eight-year-old
— When shall we go? — It hasn’t been decided yet. It ____ the weather.
I don’t know _____ he will come or not. _____he comes, I’ll tell you.
We ___ use mobile phones when the plane takes off.
He told us where tomorrow morning.
—Excuse me, where is the nearest bus stop? — ____________.