After living with his grandparents in the countryside for ten years, the boy returned to the big city ____ his parents worked.
| A．which | B．where | C．that | D．when |
We appreciate ______ us know the change of the date for the meeting.
| A．him to let | B．him let | C．his letting | D．let |
This is a picture of Dr. Yuan, a scientist ____ is well known in our country.
| A．which | B．who | C．whom | D．whose |
Only when I left my parents for Italy ________ how much I loved them.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |
There was _____ time _______ I hate to go to school.
| A．a, when | B．a, that | C．/, when | D．the, that |
.--- Robert, you didn’t travel by train?
--- I was going to, but then I decided to go by car______.
| A．yet | B．either | C．instead | D．indeed |