could you tell me ( )there are living things on the Moon

问题描述:

could you tell me ( )there are living things on the Moon
A.when B.where
C.what D.if

D,依据题意,句子为"你能告诉我月球上是否有生物吗"
选项是引导从句的,而从句是个一般疑问句,所以用if