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 is2. The boss wants everything _______ finished by the time we leave tonight.       a. to be        b. will be       c. being       d. must be3. She´s not sure who broke the window, but she ______ to find out.       a. determined       b. has it determined       c. is determined       d. is determing4. 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 difficult5. 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 spend6. 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