Once plastic pollution ______in most public areas, it is hard______.
| A．rises; dealing with | B．arises; to be dealt with |
| C．raises; dealt with | D．arises; to deal with |
—Your hamburger is the best I’ve ever tasted, Ms. Black!
—Thanks, Harry. _____.
| A．That’s easy to make | B．I learned it from my parents |
| C．Please don’t say so | D．I’m glad you enjoyed it |
Water, which seems so simple and common, is _____ makes life possible.
| A．that | B．what | C．which | D．how |
_____ is no possibility that Bob can win the first prize in the match.
| A．There | B．It | C．That | D．This |
—Have you ever ridden a horse ?
—No, but I _____ a camel when I visited Egypt last year.
| A．was riding | B．have ridden | C．rode | D．had ridden |
—I must apologize for ________ ahead of time.
—that’s all right.
| A．letting you not know | B．not letting you know |
| C．letting you know not | D．letting not you know |