The house, ______walls are red, is where my grandfather used to live ten years ago.
| A．which | B．of which | C．whose | D．that |
The bad thing about up is there’s always a _____
| A．high | B．middle | C．low | D．down |
There are so many things I wish I had known while _____ up
| A．grow | B．growing | C．grown | D．grew |
Have you ever had a case _____someone accused you of doing something you hadn’t done?
| A．which | B．that | C．where | D．when |
The problem will appear____ a different welfare system will be created.
| A．unless | B．whether | C．until | D．if |
____ is those small daily happenings ____make life so special.
| A．It / that | B． That / that | C．It / this | D．This /this |