The man was hit the head a alone while traveling in the mountain.
| A．on: with | B．in; by | C．on; by | D．in; with |
________，he talks a lot about his favorite singers after class.
| A．A quiet student as he may be |
| B．Quiet student as he may be |
| C．Be a quiet student as he may |
| D．Quiet as he may be a student |
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 |