Not until the mid-term approached ____________ how much time I had wasted.

Could you tell me ______________ for class this morning?–I am sorry, Mrs. Lin. I got up so late that i couldn’t catch the first bus.

According to traffic laws, drivers_____ drive cars after drinking wine.

I don’t think one can keep healthy _____ taking enough exercise.[ ]

Is the woman walked past just now your teacher?-Yes. She teaches English.