Complete the following sentences with the correct form of the verbs in brackets
1. this helps explain the ......of underwater photography .(popular)
2.i am .......in practice yogga everyday to help me relax.(interest)
3.i don't attach any ......to these rumours.(important)
4.Payment is .....upon delivery of the goods .(condition)
5.there's no ......in the results .(diffrent)
