Every time __________ I called on him，he was very busy.
| A．during | B．when |
| C．in which | D．/ |
Bad habits are not always easy to ; it needs your determination.
| A．remove | B．be removing | C．be removed | D．be moved |
is known to all that the Amber Room belongs to the Russians.
| A．As | B．Which | C．It | D．What |
It was in the office my sister works I met the new manager.
| A．that; that | B．where; where | C．that; where | D．where; that |
I lived in you call “ancient Greece” and I used to write about the Olympic Games a long time ago.
| A．that | B．which | C．what | D．where |
They told me that the museum was well worth .
| A．visiting | B．being visited | C．to visit | D．to be visited |