My sister ______ an English teacher in our school. Now she works in America.
—It’s dangerous to walk across the street carelessly.—You’re right. We can’t be ________ careful while crossing the street.
_______ of them knows French, so I have to ask a fourth person for help.
The song reminded me of the old golden days as soon as it _______.
You ______ come to the office today______ someone else will do the work for you.
We are ______the people in need are helped in time.