Calamity means آفت
Disaster means آفت
"Hold fast to dreams" means to cling firmly to your goals and hopes in life.
It encourages staying committed to dreams, as they give life purpose and direction.
Obsolete means پرانا یا قدیمی
Recent means نیا یا جدید
"By" means next to or beside someone.
So, "My sister sat by my mom in the bus" is the correct sentence.
Dexterity means مہارت
Skill means مہارت
"Later" is the correct comparative form of "late" used when comparing two or more people's arrival times.
The sentence compares the father's arrival to the rest of the family, so "later" fits best.
We word complain is followed by to/about.
To & about are prepositions here.
Complain to someone کسی انسان سے شکایت کرنا
Complain about something کسی معاملے پر شکایت کرنا
Salman complained to my father against me.