Books are made _____paper and paper is made _____ wood and bamboo
A. from, from B. of, of C. of, from
I have known himI was young.
| A．before | B．when | C．after | D．since |
I won’t go to the concert because Imy ticket.
| A．lost | B．don’t lose | C．have lost | D．will lost |
—The world is becoming smaller and smaller because of the Internet.
—.
| A．No problem | B．Exactly | C．All right | D．That is all right |
_____, do you know where the nearest post office is?
| A．By the way | B．On the way | C．In the way | D．the way to |
When I passed the river, I saw some children ______ on the sand.
| A．play | B．were playing | C．playing | D．played |