—Do you love teaching, Miss He?—I fell in love with teaching in 2000. I ________ for twelve years by this summer.
Look out! That tree _____ fall down.
He asked me ________ with me.
---Do you mind my turning off the light? ----_____________.Im reading a book.
--- Im afraid I can not return the book to you before Friday ----____________.
When the expression first came into being, people refused to use it but _____ they began to accept it.