.The teacher demanded that our examination paper _____handed in at once . A be B must be C would be D had to be
—Don’t press the button,John. —What if I________?
Li Yang, the founder of Crazy English, says that he copies it down _______ he comes to a sentence.
Young people should learn how to_____some money for the future.
Nine thousand guests took part in the outdoor ceremony,that impressed so many people at the White House.
Let us hope we can settle the matter without _____ more trouble.