If you are still worried, by all means come and see me outside class hours.

如果你们仍然心存疑虑，请务必在课后来找我。

Fill in your work and class hours first.

先填写你的作业和上课时间。

It's not so much the expense that I'm worried about, and we've certainly got room to do it, but it's the problem of timetabling a teacher to be in there outside class hours.

我担心的不是费用问题，而且我们也有地方，但是问题是在课外时间给老师排课。