I can think of many cases _______students obviously knew a lot of English words and expressions but couldn't write a good essay.
Her mother does not ________ of her going to study in the United States alone.
_______ the school, he saw his parents ________ for him at the school gate.
The lady insisted that the young man ______ her wallet and her parents insisted he ______ to the police station at once.
He was obviously annoyed,for he was not used to ________ like that.
They are talking _____ they had been friends for years, while in fact they have known each other for only two hours.