Supply the correct word form

II. Supply the correct word form:
1. She’s always worried about the __________ of her family. (safe)
2. Don’t leave the light on. It wastes __________. (electric)
3. This river is very __________ for swimmers. (danger)
4. Hard work always brings __________. (succeed)
5. Those clothes aren’t __________ for cold weather. (suit)
6. You must put all medicines in __________ cupboards. (lock)
7. When the ____________ failed, he used to light the candles. (electric)
8. G.B was a great _____________ of the telephone (invent )
9. ___________, I lost my keys on the way home. (fortunate)
10. ___________,fairy changed Little Pea's rags into beautiful clothes. (magic)
11. Everyone was very ___________ after hearing that news. (excite)
12. I’ll make ____________ for the meeting tonight. (arrange)
13. Ho Chi Minh City is an important ____________ center. (commerce)
14. Michael Faraday made a lot of ____________ in the field of electricity.
(invent)
15. We’re thinking of ____________ to Australia. (emigrate)16. There was an ____________ of paintings at the Art Gallery. (exhibit)
17. Thomas Watson was Bell’s ____________, wasn’t he? (assist) 
18. He was ____________ in demonstrating his invention. (success)
III. Fill the blanks with suitable prepositions: in, at, on, after, under, between, 
beside, among, out of, above, inside , downstairs .
1. There is a bus station __________ the end of the road.
2. Keep those medicines __________ the children’s reach.
3. Come __________ and sit __________ your sister.
4. D comes __________ C in the alphabet.
5. The boats sank _________ the waves.
6. Don’t shelter __________ the trees when it’s raining.
7. Please put these books __________ the bookshelf .
8. I often feel nervous when I am __________ strangers.
9.Wait a minute , please ! Don’t go ___________ . He is out .
10. My Mom isn’t there .She is ______________