当你上午见到朋友时,该如何打招呼?A. Good morning B. Good afternoon
Tom _____ a monster on the TV last Sunday.A. sees B. see C. saw
Ma Liang _____ a paintbrush.A. has B. have C. had
_____ people invented paper.A. English B. Chinese C. American
Daming _____ his trousers yesterday.A. washes B. washing C. washed
Yesterday I _____ my bedroom.A. clean B. cleaned C. cleans