—I thought you ______ for vacation tomorrow. —I had planned to, but I have a very important meeting to attend tomorrow.
Great changes ______ in China in the past 20 years.
His illness his absence.
When the man was trying to break into the bank, he was caught by the police .
My best friend who _______ a rich man two years ago has a baby now.
It snowed heavily; ______, lots of flights have been put off until further notice.