Используйте правильную форму глагола: 1. Her remark made everybody (feel) uncomfortable. 2. They got the manager (sign) the contract. 3. She was made (give up) smoking. 4. They got him (sell) the car. 5. Let him (do) the task himself. 6. He had a fireplace (install) in the corner of the sitting room.

Правильные формы глаголов:

1. Her remark made everybody feel uncomfortable.
   После make + object в активном залоге используется инфинитив без to:
   made everybody feel — «заставила всех почувствовать».

2. They got the manager to sign the contract.
   После get + object используется инфинитив с to:
   got the manager to sign — «добились, чтобы менеджер подписал».

3. She was made to give up smoking.
   В пассивной конструкции с make используется инфинитив с to:
   was made to give up — «её заставили бросить».

4. They got him to sell the car.
   После get + object снова нужен инфинитив с to:
   got him to sell — «убедили/заставили его продать».

5. Let him do the task himself.
   После let + object используется инфинитив без to:
   let him do — «пусть он сделает».

6. He had a fireplace installed in the corner of the sitting room.
   Здесь конструкция have something done означает, что действие выполняет кто-то другой. Поэтому нужен причастие прошедшего времени:
   had a fireplace installed — «ему установили камин».

Итоговый вариант:

1. Her remark made everybody feel uncomfortable.

2. They got the manager to sign the contract.

3. She was made to give up smoking.

4. They got him to sell the car.

5. Let him do the task himself.

6. He had a fireplace installed in the corner of the sitting room.