1. He calls his parents once a week, no matter _________ 
       a. is busy or not
       b. he is busy
       c. what he´s busy
       d. how busy he is
2. The boss wants everything _______ finished by the time we leave tonight.
       a. to be 
       b. will be
       c. being
       d. must be
3. She´s not sure who broke the window, but she ______ to find out.
       a. determined
       b. has it determined
       c. is determined
       d. is determing
4. Many people don´t like living alone because they find __________ do everything by themselves.
       a. it difficult to
       b. difficulty in   
       c. the difficulty of
       d. that it´s difficult
5. I can see you´re tired, so I suggest _______ the evening at home for a change.
       a. us to spend 
       b. spending
       c. we´ll spend
       d. to spend
6. Dad just called to say he´ll be a little late, but he´s _______ the way.
       a. out of
       b. on
       c. in 
       d. over