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 ... cat and .... dog, ...... cat doesn't get on well with .... dog. 2.You can see ____ moon clearly in the Mid-Autumn festival. 3.He is ___ famous actor. 4.My brother doesn't like ____ present I gave him. 5.Where is ____ book I lent you last week? III. Fill in the blank with "mustn't" or "must" or " don't have to". 1. You ______ pick me up tomorrow. I will take a taxi. 2. Look at that sign ! You ____ walk on the grass.