The policeman came up to the house, whose door was open, _____ there for a while, and went in.
A．to stand B．standing C．stood D．stand
The boy sat there quietly, ______ eyes were filled with tears.
A．whose B．with whose C．his D．of whom
Look! Here comes my English teacher, ______ a group of students.
A．following B．to follow C．followed D．follows
---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
