63．Be quiet! The child ____ .

　A．sleeps

　B．slept

　C．is sleeping

62．Stay inside, please. It ____ hard right now

　A．is raining

　B．has rained

　C．rains

　D．was raining

61．“Where is Mr Du?”

　“Look! He ____ on a big machine over there.”

　A．works

　B．worked

　C．is working

　D．has worked

60．Our knowledge of the universe ____ all the time. A．grow

　B．is growing

　C．grows

　D．grew

59．Look! Lily with her sister ____ a kite on the playground.

　A．is flying

　B．flying

　C．are flying

　D．fly

58．Jane is busy now. She ____ pictures.

　A．draws

　B．drew

　C．is drawing

57．It's five years since I ____ you last time.

　A．met

　B．meet

　C．have met

　D．had met

56．Where did he ____ two years ago?

　A．works

　B．worked

　C．work

　D．working

55．“ Have you mended the motorbike, Tom?”

　“Yes, I ____ it ten minutes ago.”

　A．have

　B．had

　C．mended

　D．have mended

54．John ____ me the book two weeks ago, so I ____ it for two 　weeks.

　A．borrowed, have borrowed

　B．lent; have borrowed

　C．borrowed, have had

　D．lent; have kept