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
She complained to the teacher against me.
They travel on horse-back means they travel on the back of a Horse.
We use preposition on when we refer a position or surface.
quarrel with a person کسی انسان سے جھگڑنا
quarrel over things کسی بات پہ جھگڑنا
We had a quarrel over money.
Endowed is followed by with.
With is a preposition here.
Endowed with means gifted with.
She is endowed with charm.
To caution someone for doing something means
کسی کو کسی کام سے آگاہ کرنا، خبردار کرنا یا پھر الرٹ کرنا
He cautioned me for my spelling.
The preposition ‘from’ is used when the outcome in different from the actual product.
Butter is made from milk.
These sweets are made from pure milk.
نیچےdown
That was the worst movie I have ever seen.
"Worst" is the superlative form of "bad" and is used to describe something that is the worst out of a group or over time.
The phrase "I have ever seen" indicates a comparison over all time, which requires a superlative form.
The sentence requires a gerund (verb + ing) after the verb "loves."
"He loves watching TV" is grammatically correct.
"Yours" is the correct possessive pronoun.
It means something that belongs to you.