Help me please

[Abel7408]

Complete each sentences with a present tense form of be + a past participle.

What the meaning? for example
The wheel_____ to have been invented three or four thousand years ago.
(think)


I don¨t know to make these excercise

 

[heidita]

Complete each sentences with a present tense form of be + a past participle.

What the meaning? for example
The wheel_____ to have been invented three or four thousand years ago.
(think)


I don¨t know to make these excercise

So, you have to use the verb to be+think (past paticiple)

The wheel is thought to have been .....

cheers