—What ________his happiness all his life?
—________what he has got.
| A．has led to；Being content with |
| B．has led to；Being content to |
| C．led to；Content to |
| D．led him to；To content with |
I am surprised that a company with the good _______ would produce such poor quality goods.
| A．enjoyment | B．appreciation | C．entertainment | D．reputation |
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 |