Thanks to Dr Yuan’s research, the UN has more tools in the battle to rid the world _____ hunger.
| A．of | B．on | C．off | D．at |
Nature has provided Shangri-la with endless natural treasures, _________the land a happy home for the local people.
| A．to make | B．making | C．made | D．having made |
. When they came to the center of the forest, the visitors found
themselves ____ ___ by wildlife.
| A．surrounding | B．surrounded | C．to surround | D．surround |
. Allow children the space to voice their opinions, _______ they are different from your own.
| A．unless | B．until | C．even if | D．as if |
My brother, ________ is in the army now, used to be an artist.
| A．who | B．that | C．whom | D．which |
________ matters most in learning English is enough practice.
| A．What | B．It | C．That | D．As |