Fill in the blanks with A and An

Fill in the blanks with A and an

1._______________________elephant

2.________________________university

3.__________________________umbrella

4.__________________________ticket

5.___________________________VIP

6._____________________________honest man

7.______________________________half-hour lesson

8.___________________________one-hour lesson

9.____________________________useful book

10._________________________________SOS

11.___________________________X-ray

12.__________________________European

13._____________________________hand

14.______________________________underpass

15.______________________________unit

16.________________________________CD

17.______________________________exam

18.____________________________school