____ at a college or university in the USA, Chinese and other international students must demonstrate a strong ability in spoken and written English.
Scientists are convinced _____the positive effect of laughter _____physical and mental health.
Could you give me a hand? It seems that my strength has _________.
Unfortunately, ____ stone hit him on ______ head and he got injured.
—I’m sorry I broke your teapot.— .
I thought our friendship was finished Jenny apologized first and I forgave her right then.