——It is a long time _____I saw you last．
——Yes．And it will be a long time _____ we see each other again．
| A．when; before | B．after; when | C．since; before | D．since; until |
-- Not knowing what style of iPad to choose, _______.
| A．some advice was given to Liming |
| B．Liming had to consult his IT teacher |
| C．so Liming had to consult his IT teacher |
| D．Liming’s IT teacher gave him some advice |
It seems that living green is ______ easy and cheap. A small step can be rewarded with long-term benefits.
| A．astonishingly | B．exactly | C．fortunately | D．hardly |
What impressed me in Greece was that the oceans _______ the islands were deep blue and many cities lay on the bay.
| A．surrounding | B．being surrounded | C．surrounded | D．surround |
Researches show that the taller you are, the more _______ you are to suffer back pain.
| A．likely | B．possible | C．perhaps | D．probable |
One way to ______ species under threat of extinction is to remove them to zoos and parks and feed them there.
| A．reserve | B．prevent | C．preserve | D．reduce |