问题

difficult to tell exactly ____ the saying began,but it is probable that it was in the theater or movie industry.

A:where
B:when
C:why
D:that

正确答案是：

同类题型

下列各句中，没有语病的一句是（）

It was the training _______ he had at school _______made him good jumper．

His foot was hurt and he had to give up ________soccer.

The poor old man with his two daughters ___ in the street

______ what the teacher says if you think it is important.