Rewrite the following sentences by using PRENSENT or PAST PARTICIPLE phrases

rewrite the following sentences by using PRENSENT or PAST PARTICIPLE phrases
1) all the rubbish that is floating in the sea is a real danger to health
2) Thompson is the most famous actress who appears on stage here
3) the secretary was the only person who was offered a pay rise
4) Daniel was the most suitable candidate who appied for the job