. --- He has to finish the experiment today. He must be in the lab,________? ---That s quite possible.
“Well, I’ll tell you a secret ...” said the boy, with his mouth almost _____ my ear.
They looked forward with hope _____ a chance to receive further education.
I regret _____ hard at school, or I would have succeeded in passing the exam.
. We should prevent such a silly mistake _____ again.
_____ full preparations, we decided to put off the meeting till next week.