The situation will continue_____ humans stop hunting them for their fur and bones.
| A．because | B．so | C．unless | D．though |
After the earthquake in Japan, we are trying to help the _______ people to rebuild their homes.
| A．harmless | B．endless | C．useless | D．homeless |
－How long do you think the terrible weather will _______?
－Why not listen to the weather report?
| A．appear | B．last | C．change | D．discover |
－Oh, the traffic is too heavy.
－Let’s change ________route to the airport.
| A．other | B．others | C．the other | D．another |
－Can I join Oxfam Trailwalker?
－Only if you are ________ eighteen.
| A．over | B．on | C．under | D．below |
－Must we leave now?
－No, we ________. We still have two more hours.
| A．can’t | B．mustn’t | C．needn’t | D．shouldn’t |