( )There are many _____ on the ______ trees. A. pear; pears B. pears; pear C. pears; pears
多锻炼 A.do morning exercises B.do more exercise
穿暖和的衣服 A.wear worn clothes B.wear warm clothes
深深吸一口气 A.take a deep breath B.make a deep breath
看病 A.see a doctor B.be a doctor
doct__ A.er B.in C.or