— Must we go to see a doctor at once when we have the flu?—No,_____.A. we mustn’tB. we shouldn’tC. we don’t have to
He got up early________he could catch the first bus.
My grandfather used to________in the busy city,but now he is used to________in this peaceful village.
He is________in that________movie.
At last they all agreed________one million to the charity.
Seeing their teacher________into the classroom,they stopped________at once.