It was a pity that the great writer died _______ his works unfinished.
In 1800s, a group of adventurers(探险家) ______ on their exploring trip. Five days later, they came to what is now known as Quebec.
--It’s said that no one ______ light a cigarette at a gas station. --- Yes. Safety always comes the first.
I don’t know ______ or not the books _____ to the homeless children next month are really useful.
—I failed again in the math test.-- ______.
This year __________ to be another good one for harvests.