Question

【题目】I invited her over to my house and showed her the ring, but __________ she left, I noticed the ring missing.

A. the moment

B. the moment when

C. when the moment

D. at the moment when

Answer 1

【答案】A

【解析】考查连词。句意：我邀请她到我家来玩并拿给她戒指看，但是她一离开我家，我就发现戒指不见了。the moment虽是名词，但在这儿可以作连词用，相当于as soon as，后面不再用when，前面不再用介词，故选A。