—_____________ do you visit your grandparents?—Twice a month.
---Can I help you?---Yes, I bought this radio here yesterday, but it _____________.
He looked very confident and calm during the test, but __________ he was extremely nervous.
It was a cold winter night, and there wasn’t anyone __________the boy could turn for help in the street.
___________for his good skill, this doctor has a lot of visitors calling for help all the time.
The harder you__________, the better progress you ___________.