I can’t solve the math problem because it is too difficult. What should I do — _________ ask the teacher for help

Mary, do you want ________ some ice-cream — Oh, no, it’s not healthy.

The scientists are now trying to discover what use can be ____such a material ____ the problem.

Our teachers don’t _____us smoking cigarettes in the school

Mother’s Day is celebrated across the world on the Sundayin May.—That’s right. People show their love for theirmothers by giving some presents.