I. Find and correct the mistakes
1.Their life has been more comfortably since they moved to the city
2.She looks more pretty in this white dress
3. The manager wants us to work more hardly.
4. This week you looks more heathily than that week.
5. Everyone in my town is looking for more better crop this year.
II. Fill in the blank with "a" , "an" or "the".
1.We have .a.. cat and .a... dog, ...the... cat doesn't get on well with ...the. dog.
2.You can see _the___ moon clearly in the Mid-Autumn festival.
3.He is _a__ famous actor.
4.My brother doesn't like __the__ present I gave him.
5.Where is _the___ book I lent you last week?
III. Fill in the blank with "mustn't" or "must" or " don't have to".
1. You __don't have to____ pick me up tomorrow. I will take a taxi.
2. Look at that sign ! You _mustn't___ walk on the grass.