Of all the things I have done in my professional career, nothing has been more ______ than writing that book.
| A．approved | B．rewarding | C．developed | D．convincing |
—Jenny, it won’t be long before I receive the admission letter from Oxford University.
—_______
| A．Good luck! | B．Congratulations! |
| C．Why so soon? | D．Don’t worry． |
In my opinion, everyone has periods in their lives _______ everything seems very hard.
| A．when | B．where | C．which | D．that |
Tom _______ the TV set for $500，which was much cheaper than he had expected．
| A．bought | B．paid | C．cost | D．spent |
Henry’s birthday is on _______ Saturday next month，but I don’t remember _______ date.
| A．不填；the | B．a；a | C．a；the | D．the；the |
______around the university, we then were taken to a building, ______ many scientists worked.
| A．Showing; where | B．Having been shown; where |
| C．Having shown; which | D．Being shown; that |