问题

Your natural hair color begins to fade________you grow older, and in time you grow grey[ ]

A:since
B:when
C:while
D:as

正确答案是：

同类题型

33. Is this hospital ________ you onceworked for 10 years

―Is this her computer ― .

__ out of the theatre, the famoussinger found himself ________ by his fans

He used to __________ in the morning, but now he is used to _________ at night.

My dog’s really fat.— You ________ have given her so much food. [ ]