—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.
The teacher tells his students to read the novel over and over again until they ______ it.
"It’s ______ warm today, let’s go swimming." "No, I don’t ______ to do. It’s ______ cold today.
----I have never heard it _____ before. And you ? ----The same as you.
In the dark street, there wasn’t a single person _____ she could turn for help.
She was more headstrong than ______.