to come

to be coming

to have come

to  inform

to have been informed

to  be informed

will have

am going to have 

is going to have

will have

The mountain gorillas are believing to be very calm and shy.

The mountain gorillas believe to be very calm and shy.

The mountain gorillas are believed to be very calm and shy.

to have been increased

to be increased

to be increasing

'll be meeting

am meeting

 meet

will play

playing 

are playing 

I did not expect my business partner send me a bouquet of flowers.

I did not expect my business partner to send me a bouquet of flowers

I did not expect my business partner to have send me a bouquet of flowers

A lot of weightlifters said to have enormous muscles.

A lot of weightlifters have said to have enormous muscles.

A lot of weightlifters are said to have enormous muscles.