__________ I met him, he was playing basketball on the playground.

__________ I met him, he was playing basketball on the playground.

A.The first time

B.For the first time

C.It is the first time

D.The first time that

答案及解析： A

解析：

只有A项可以充当连词，引导时间状语从句，D项中的that是多余的。