You will make some progress in your study of English ______ you keep more words in mind.
Only when the final examination was coming ______ he had quite a lot to do.
Practising Chinese kong fu can not only ______ one’s strength, but also develop one’s character.
Scientists are convinced ___ the positive effect of laughter ____ physical and mental health.
—Never say never, and you’ll make it. —That’s it. .
My uncle hasn’t been able to quit smoking, but at least he has .