（1）在句中的必要处加上a an 或 the.
（1）1.i have goldfish.Goldfish is called Rosemary.
2.Moon moves around Earth ,and they are both smaller than sun.
3.we are staying in hotel.Hotel is on Green Street.
4.There is window in our classroom .i sit near window.
5.We can't see Sun in sky at night ,but we can see Moon.
6.We have English grammar exercise for homework.it's easy exercise.