I thought my deskmate would be ____ for class,but he was late again.

问题描述:

I thought my deskmate would be ____ for class,but he was late again.
用in time还是on time,不是说只有in time for这个结构的吗.

in time是及时的意思.on time是准时的意思.
上课应该是准时到.
in time for 不一定的.可以不加for