IX. Fill in the blank with the correct prepositions.
1. Ha Long Bay is recognized ............... UNESCO as a world Heritage Site.
2. He relized his alarm clock didn't go .................
3. Everyone fell .................. the deep and dangerous water.
1.Ha Long Bay is recognized by UNESCO as a world Heritage Site.
2.He realized his alarm clock didn't go off.
3.Everyone fell off the deep and dangerous water.
IX. Fill in the blank with the correct prepositions.
1. Ha Long Bay is recognized .......BY........ UNESCO as a world Heritage Site.
2. He relized his alarm clock didn't go .......ON..........
3. Everyone fell .........INTO......... the deep and dangerous water.