A lot of attention ______ to greenhouse gas emission. Look at those environmental posters.
You have responsibility ______ clearing up the room after class.
It was so urgent that we have to finish it in ______.
I am surprised to see a _______ chair in the room.
Being a grandparent, he is the proudest ______.
The train was leaving. She didn’t have enough time ______ her things. A to pack B. packing C. being packed D. to be packed