1. People think that the company is planning a new advertising campaign. → It is 2. Thomas Edison invented the phonograph in 1877. → The phonograph 3. Noone has found two children in the forest yet. → 4. “Why don’t you complain to the company, Peter?” said William  William suggested ________________________________________________

`1.` It is thought that the company is planning a new advertising campaign.

`->` It is thought that + S + V

`2.` The phonograph was invented by Thomas Edison in 1877.

`->` Bị động QKĐ : S + were/was + P2 (by O)

`3.` Two children haven't been found in the forest yet.

`->` Bị động HTHT (`-`) : S + have/has + not + been P2 (by O)

`4.` William suggested that Peter complain to the company

`->` Suggest that + S + (should) + V_nguyên thể.