In order to make our city green, ____.
In this factory, suggestions often have to wait for months before they are fully _____.
After a long walk, they______ pass over the mountain.
—I hear Mike refused to tell the truth and was taken away by the police. ---Where did you ____?
—Have Mike and Tina sold out all of the English storybooks? ---Yes,completely.____ is left.
—Have you ever been to Washington? ---Yes, ____shall I forget ___ it for the first time.