She spent a happy afternoon her coins and stamps she had collected those years.
| A．to look for | B．worked on |
| C．sorting out | D．watch over |
If you are traveling ________ the customs are really foreign to your own，please do as the Romans do.
| A．in which | B．what | C．when | D．where |
In peace，too，the Red Cross is expected to send help ________ there is human suffering.
| A．whoever | B．however | C．whatever | D．wherever |
You'd better not leave the medicine ________ kids can get at it.
| A．even if | B．which | C．where | D．so that |
________ unemployment and crime are high，it can be assumed that the latter is due to the former.
| A．Before | B．Where | C．Unless | D．Until |
Today，we will begin ________ we stopped yesterday so that no point will be left out.
| A．when | B．where |
| C．how | D．what |