John received an invitation to dinner, and with his work ___, he gladly accepted it.
It’s helpful to put students in a situation _______ they can learn how to cooperate with each other.
How I wish I _________ him the secret! I regret having done that now.
—Who do you think will get the first prize? —Mary, of course. She ________ for the competition for months.
—Who do you think will get the first prize?
—Mary, of course. She ________ for the competition for months.
All his time _______research on Chinese history, he has no time for outdoor activities.
—How long do you think it will be _______ we get the loan?—Perhaps two or three months.