.What some teenagers don’t realize is ____ difficult life can be if they get addicted to drugs.
I’m sure that if you make good use of your ____ time, your English will be improved in a short time.
They are getting things together in______ preparation for ______ journey we have planned.
----Mary had a wonderful time at the party. ---- ________, and _________.
A driver should __ the road when .A concentrate on; drive B. concentrate in; driving C. concentrate to; drove D. concentrate on; driving
Helen always helps her mother even though going to school ______ most of her day.