Scientists are convinced_____the positive effect of laughter_____physical and mental health

Jim is very_____ because he doesn’t like exercise.

Last night,you forget _____off the computer when you went to bed.—– ReallyI remember _____off.

What did the teacher ask you to do just now—She said “Each student must ______ a composition once a week.”

e gathered nearly 100,000 quilts, upto half have gone to the flood-hit areas