These/Those
后半部,如果要用have的话,和often 的位置就要换,often 一般用于动词之前,be 和助动词之后
所以是 These/Those students have often races on the playground.不好意思题目打错了____ students often ___races on the playground？(have)有问号的哦~原来是这样啊~~ Do students often have some/the races on the playground?这张图片是什么意思啊