Having lived in China for 8 years, Helen has a good _______ of both English and Chinese.
When I got back home, I saw a message pinned to the door“ Sorry to miss you, I will call later.”
Present at the meeting .
Scientists are convinced _____ the positive effect of laughter _____ physical and mental health.
What would have happened, as far as the river bank?
Rather than on a crowded bus, he always prefers a bicycle.