Please excuse me _______ your letter by mistake.
If there _____ an art exhibition in our city next week, our class _____ go and enjoy it.
Though _____ in Germany, Henry was brought up in Jinhua by his aunt.
1 didn’t know ______ they got to know each other.
—There is still a copy of the book in the library.Will you go and borrow _____?—No.I’d rather buy ______ in the bookstore.
Since the forest has been destroyed by a big fire, a large ______ of trees ______ to be planted on the mountain.