填空。 Mary has some friends. 1 Betty, Peter, Alice 2 Mike. Mary is the oldest 3 . Betty is thirteen years 4 . She is younger than Mary and older than Peter. Alice is nine and Mike is seven. Betty and Peter are 5 runrung. But Peter runs faster. Mary and Betty like to _ 6  . Mary plays better than Bettey. Alice sings 7 0f them. Mary and Betty study in a middle school. Alice and Mike study in a primary school. They 8 work hard at school. But Betty works 9 . Her handwriting is good, 10 . (     )1.A. They are (     )2.A. but (     )3.A. in the five (     )4.A. older (     )5.A. best (     )6.A. play basketball (     )7.A. good (     )8.A. six (     )9.A. hard (     )10.A. too B. It is B. or B. of five B. old B. better B. play a basketball B. better B. all B. harder B. two C. There are C. so C. of the five C. oldest C. well C. play the basketball C. best C. four C. veryhard C. at D. We are D. and D. for the rive D. very old D. good D. play basketballs D. well D. both D. hardest D. also