–It’s a long time ___ I last saw you.
--Yes, and it will be two months ______ we can meet again.
| A．before; since | B．when; before | C．since; when | D．since ; before |
Wind power is an ancient source of energy we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
---More and more high-rise buildings have been built in big cities space.
---I couldn’t agree more.
| A．in search of | B．in place of | C．for lack of | D．for fear of |
I have seldom seen my mother ________ pleased with my progress as she is now.
| A．So | B．very | C．too | D．rather |
Jack took the boxes off the little table to make _______ for the new computer.
| A．area | B．room | C．field | D．position |
Though ______ to see us，the president gave us a warm welcome and showed us around.
A. surprise B was surprised C. surprised D. being surprised