例句：
Which school do they attend?
他们上的是哪一所学校？
It was incumbent on them to attend.
他们必须出席。
Our children attend the same school.
我们的孩子上同一所学校。
It is important that he attend every day.
他每天都要出席，这很重要。
We were made to attend meetings every day.
我们每天都被迫参加会议。