Răspuns:
1 While I was in Japan, I decided to go to the famous Hamamatsu Kite Festival.
In aceasta propozitie avem "to - infinitive"
2 They wanted to join in the fun.
Avem "to - infinitive"
3 I will definitely go there again.
Nu avem "to", deci e vorba de infinitiv fara "to " ( infinitive without to)
4 l enjoyed walking around the city centre.
Avem forma "-ing" la verbul "walking"
5 I couldn't help admiring the view.
Avem forma "ing" la verbul "admiring"
6 It made me feel sad.
Nu avem "to", deci e vorba de infinitiv fara "to " (infinitive without to)