What do you know about that tennis player?— He ________ third in the world. [ ]

Have you figured out how much the tuition is in American universities?—$19,000, or _____like that

You can nevertouch this machine when it ________, it is very dangerous.

The young teacher _______ gave us a lessonyesterday comes from Beijing.

下列各句中，没有语病的一句是