The reason he is ill is( )he ate too much.A:due to B:since C:because D:that

问题描述:

The reason he is ill is( )he ate too much.A:due to B:since C:because D:that

D:that

D

选D
前面有个the reason了,所以ABC都不能选,不然就重复了
而且要是A可以选的话,BC也都可以选···排除法也可以得出D

D
表语从句
the reason why ……is that……