59．---- __________ that? 　---- That's our teacher, Mr Li. 　A．What's 　B．Who's 　C．Where's　D．How's

58．---- Is your friend a boy or a girl? 　---- __________ . 　A．Yes, he's a boy　B．Yes, she's a girl 　C．They're boys 　D．He's a boy

57．---- Are you _________? 　---- Yes, I am. 　A．in Grade One B．at Grade One 　C．in One Grade D．at One Grade

56．---- Is that an English book? 　---- _________. 　A．Yes, it is　B．Yes, they are 　C．No, it is　 D．No, they aren't

55．---- What? 　---- They are red cars. 　A．is that B．those are 　C．that is D．are those

54．---- What that? 　---- It's a Chinese book. 　A．am 　B．is 　C．are　D．be

53．Tom and Jim _________ in Grade One. 　A．am 　B．is 　C．are　D．be

52．That's my ________ . 　A．pencil－box　　 B．a pencil－box 　C．the pencil－box　 D．pencil－boxes

51．This is apple. It's ______ big apple. 　A．an; an　B．a; a 　C．an; a 　D．a; an

50．Jim is ______ English boy. 　A．a　B．an 　C．the　D．/