The computer was used in teaching. As a result, not only _____, but students became more interested in the lessons.
._____ in thought , he almost ran into the car in front of him .
I'll have you ______ English in six months .
I posted the letter some time _____ the week .
Take a taxi , _____ you'll miss your train .
If you _____ stop smoking , you can only expect to have a bad cough .