79. Before there goes the bell for class, our math teacher took out a piece of and wrote his problems on the blackboard.
| A．brush pen | B．chalk | C．paper | D．Pencil |
The journey around the world took the old sailor nine months, ____ the sailing time was 226 days.
| A．of which | B．during which |
| C．from which | D．for which |
The general at last got a chance to visit the village, ___ he used to fight, ___ he had been dreaming of for year.
| A．that; which | B．where; that |
| C．in which; what | D．where; which |
—Where did you find Mr. Brown? —It was in the factory ______ he paid a visit yesterday.
| A．to which | B．that | C．which | D．to where |
Generally speaking, _____ according to the directions, the drug has no side effect.
| A．when taking | B．when taken |
| C．when to take | D．when to be taken |
If you are travelingthe customs are really foreign to your own，please do as the Romans do.
| A．in which | B．what | C．when | D．where |