第1个回答 2008-12-30
你的例子有问题
in the morning 是两种可能，一个是将来，一个是过去。就算是一般进行时，也该用dose.
when did/will/does school finish.
what did/will/does betty study on friday.
其他同上
看你学到哪种时态了
第2个回答 2008-12-30
When does school finish?
What does Betty study on friday?
When does Betty study science?
When does morning break finish?
When do Betty and her friends have lunch?本回答被提问者采纳
第3个回答 2008-12-30
我是英语老师，帮帮你。
When does school finish?
What does Betty study on Friday?
When does Betty study science?
When does the morning break finish?
When do Betty and her friends have lunch?
祝你进步！