剑桥英语语法题

1 twice2 busier3 the bigger4 are you doing / have you done5 runners6 isn't grown1 She reads a picture book in the park.2 He does his homework every day They are doing their homework now .

1 not2 busier3 the bigger4 did you do5 runners6 doesn't grow1 She is reading a picture book in the park.(变第三人称复数) 【They are reading picture books in the park】2.They do their homework everyday.(变单数第三人称，现在进行时) 【He/She does his/her homework everyday.】