-- You look tired， Miss Green.

--yeah . I     computer games for two hours.

A．play              B．was playing        C．have been playing   D．am playing

 — Hello, you look tired today.

   —Yes, I slept too late yesterday evening. I  my homework and forgot the time.

A. was doing     B. did      C. have done      D. had done

—Tom, you look tired this morning. What’s wrong?

—I was so busy that I didn’t go to bed________12 o’clock last night.

—Why do you look tired? —Because I          until 11:50 last night.