-What are you doing?
-We are talking about the books and writers____we like.( )
that
which
who
whom
— Hey, boy. You can’t cross the street now. You have to wait _______ the traffic lights turn green. — Oh, sorry and thank you.
Mom was cooking ________ Dad was reading newspapers.
It’s late. David washes his face _______ goes to bed.
()—Do you believe that paper is made ________ wood? —Yes, I do. And you can see that books are made ________ paper.
Guangdong is ____ the south of China .