--Excuse me.Did you see a girl in red passing by just now?

----No,sir .I______a newspaper.

A．read             B．was reading        C．have read         D．am reading

--Excuse me.Did you see a girl in red passing by just now?
----No,sir .I______a newspaper.

--- Excuse me. Did you see Tom just now?

--- I saw him _______ the building and go upstairs.

1. A.
   to enter
2. B.
   enter
3. C.
   entering
4. D.
   entered

--- Excuse me, could you tell me _____________?

    --- Sorry, sir, I wasn’t there at that time.

A.   how did the accident happen    B. how the accident happened

C.  how does the accident happen   D. how the accident happens