--Is this the office ________ your parents are working now?
--No. They are working in the next one.
| A．in which | B．in where |
| C．that | D．which |
The old building, behind _______ was a famous church, was _______ we used to work.
| A．that, the place | B．it, the place | C．which, where | D．what, where |
The little time we have together we’ll try _____ wisely.
| A．spending it | B．to spend it | C．to spend | D．spending that |
. When he was working there he caught a serious illness from _____ efforts he still suffers.
| A．which | B．that | C．whose | D．what |
. Luckily, we’d brought a road map without ______ we would have lost our way.
| A．it | B．that | C．this | D．which |
Is this the reason _______ at the meeting for his carelessness in his work？
| A．he explained | B．what he explained | C．how he explained | D．why he explained |