Sandy likes to ride a bike .Sandy 是第三人成单数
They are going to the fun fair 正在进行时 be 动词+现在分词
Bobo's birthday is on july fourteenth .几月几日要用序数词
We like eating cotton candy like doing sth 那怎么改？我写的都是正确的。OK? We like eatingcotton candy。（ like doing sth)