John promised his doctor he ________ not smoke, and he has smoked ever since.
| A．might | B．should |
| C．could | D．would. |
In many places in China, ___ bicycle is still ___ popular means of transportation.
| A．a; the | B．/; a | C．the; a | D．the; the |
—Hello, could I speak to Mr. Smith?
—Sorry, wrong number. There isn't______ Mr. Smith here.
| A．不填 | B．a | C．the | D．one |
_________ worries me the way he keeps changing his mind.
| A．This | B．That | C．What | D．It |
Little joy can equal ________ of a surprising ending when you read stories.
| A．that | B．those | C．any | D． some |
—Who called me this morning when I was out?
—A man calling ______ Robert.
| A．him | B．himself | C．his | D．不填 |