Используйте «doubtfulness» в предложении

1. There was an emotional stubbornness associated with his customary doubtfulness, and this state of mind, coupled with his chagrin at having run away from them, conspired to create a situation of isolation which even Thomas himself did not fully understand

2. This suspicion that there is, this feeling about a certain concern and doubtfulness that is

3. suspicion that there is, this feeling about a certain concern and doubtfulness that is lingering on in the