---You know Jane?
---Yes, it was _____ I surfed the Internet last week.
A．that B．when C．why D．whom
---I’m wondering why the visitors chose to stay with the host family.
--______ real local life.
A．Experiencing B．Experience
C．To experience D．Having experienced
---How'syour project work going, Jack?
---______. I'm half finished with it.
A．So far so good B．It's up to you C．Never mind D．Forget it
It’s better to go shopping in the supermarket than ____ home for chat.
A．staying B．to stay C．stay D．stayed
I think that’s the only way we can think of ______ the math problem.
A．solve B．solves C．to solve D．solving
---There must be a dozen pens in this house but I can never find one when I need one.
--- Keep looking. ______ is sure to turn up.
A．One B．It C．That D．This
