As the world’s population continues to grow, the ___of food becomes more and more of a concern.
| A．worth | B．supply | C．package | D．list |
Nearby were two canoes ____ they had come to the island.
| A．which | B．in which | C．that | D．/ |
Jack is pleased with ____ you have given him and all ____ you have told him.
| A．that, what | B．what, that | C．which, what | D．that, which |
Do you work near the building ____ colour is yellow?
| A．that | B．which | C．its | D．whose |
In the dark street, there wasn’t a single person ____ she could turn for help.
| A．whom | B．who | C．to whom | D．form whom |
Is this school ____ we visited three years ago?
| A．the one | B．which | C．that | D．where |