问题

I earn only 50 dollars a week, she earns 80 dollars

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

正确答案是：

同类题型

—What do you think of her new book — There is nothing special about it. I mean it is just__________.

_____ what I said to him, he refused to follow my advice

While reading, Helen has a habit ofstopping _____ to give her long and flowing hair a smooth.

The class _______ 80 students is hard to manage. [ ]

How long may I this book —About two weeks.