I. Rewrite the sentences using must, must not, have to, don't have to, can, could, may, migh, as in the example?
1. Workers are obliged to wear a helmet at work.
+ Workers must wear a helmet at work.
2. It isn't necessary for you to wake up early tomrrow.
+ .....................................................................
3. Is it possible for me to call you back later this the afternoon.
+ ......................................................................
4. Is it ok if I borrow your pencil ?
+ .......................................
5. It's againist the law to drive without a driver's license.
+ ........................................................
6. I strongly advise you to apologize as soon as possible
+ ...................................................................

II. Fill the blanks with the correct particle: up, out or for ?
1. Please speak up! I can't make ................ what you're saying.
2. No matter how often Michael and i argue, we always make .................. in the end.
3. Stop making ................. excuses all the time. Just tell me what really happend.
4. David had to leave in a hurry and made ..................... the exit.