Jeff is hard-working. He seldom, _____, comes to work late and leaves off early.
| A．if so | B．if ever | C．if any | D．if not |
—It’s nice.Never before____ such a special drink!
—I’m glad you like it.
| A．I have had | B．I had | C．have I had | D．had I |
We feel our duty to make our country a better place.
| A．it | B．this | C．that | D．one |
_____is our belief that improvements in health care will lead to a stronger, more prosperous economy.
| A．As | B．That | C．This | D．It |
—There is still a copy of the book in the library.Will you go and borrow_____?
—No，I’d rather buy_____in the bookstore.
| A．it；one | B．one；one | C．one；it | D．it；it |
It is often________that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |