题目

are, they, riding, bike, a (.)_______________________________________________________ 答案：【答案】They are riding a bike.【解析】are riding a bike正在骑自行车，they他们，根据所给句号，可知句子是陈述句，根据词义连成句子：他们正在骑自行车。故答案为They are riding a bike.2018年某月27日是星期四，本月的1日是星期______