—It is a mystery and a shock to all who knew him that he____ have taken his own life in this way.—What a pity, indeed.
My mother ________ always wave goodbye to me while I was leaving for school.
Faced with the crisis(危机), the government _________ calm and took timely measures.
In autumn, leaves turn yellow and _________ the trees.
I hoped Tina _________ to my birthday party next Thursday.
Several months later, he found Mr. Jackson very difficult ________.