These old women are fond of bargains, that’s why they were so easily ________.[ ]

There four teachers and a student in he office.

So difficult it to work out the problem that I decided to ask Tom foradvice.[ ]

I still feel __________ about the error in the accounts；I ought to have noticed it,and pointed it out.[ ]

Don’t worry! I’m sure you’ll your classmates if you are kind and friendly to them.