选择正确的单词填空。1. There ______________ (is, are) seven days in a week.
2. There______________ (is, isn't) any milk in the bottle.
3. There ______________ (are, is) no books on the shelf.
4. There______________ (is, was) an English exam in our class yesterday.
5. How many days ______________ (there are, are there) in a year?1. are 2. isn't 3. are 4. was 5. are there