---Have you finished all your exercises?
---Yes, ___ is left. As a matter of fact, they are as easy as ABC.
A. nothing B. not one C. none D. neither
Believe it or not, no bread eaten by us is as sweet as _______ earned by our own labor.
| A．one | B．that | C．such | D．what |
With the successful launch of Tiangong-l, which was _____ breakthrough in space field,
China's space dream took a step closer to _____ reality.
| A．a;/ | B．the； a | C．a; the | D．the;/ |
Our English teacher is wearing a gold watch, ________are made of small diamonds
| A．whose the hands | B．of which hands |
| C．the hands of which | D．the hands of whom |
__________at the door before you enter the office，or you’ll be considered impolite
| A．Knocking | B．Knocked | C．Knock | D．To knock |
It was March 14th．2013__________Xi Jin ping was elected chairman of the People’s Republic of China
| A．in which | B．that | C．until | D．when |