I used to go camping a lot, so it isn’t the first time I ____in a tent.

It’s nearly 5 years since I worked in the company. I _______ in a school.

A．taught            B．was teaching

C．am teaching       D．had been teaching

--- I let my secretary call you several times. Do you know that?

  ---- I _______ in a meeting. I’m sorry.

A. had been    B. was    C.am    D. have been

—Which hotel are you in?

—I____ in a hotel. A friend I met on the train ____ to put me up for a couple of nights.

A. haven’t stayed; has offered    B. am not staying; offered  

C. am not staying; is offering     D. do not stay; offers

 --- Where did you put the car keys?

   --- Oh, I ________ I put them on the chair because the phone rang as I ______ in.

   A. remembered ; come                  B. remembered ; was coming

   C. remember ; come                                       D. remember ; was coming