题目内容：

We thought there were 35 students in the dining hall,______ ,in fact,there were 40
while
whether
what
which

优质解答

选while.
while可用作并列连词,意思是“而”.
“我们以为餐厅里有35个同学,而实际上是40个.”
又如：Some people like him,while others hate him.
（有些人喜欢他,而有些人讨厌他.）