Explanation

incorrect: I gave him as much as he could eat 

correct: I gave him as much as he could eat

Generally, both Gave and Could are used in Past Tense. 

Explanation

The correct preposition is "on" when referring to being aboard a vehicle like a train, bus, or plane.

"Seat on the train" is the standard phrase used in English.

Explanation

The sentence uses "by next year" — a future time marker, so Future Perfect Tense is correct.

"Will have learned" fits the structure: Subject + will have + past participle.

Explanation

The correct choice is "is watching" because it follows the present continuous tense, which is used to describe actions happening right now.

"She is watching the TV" indicates that the action is currently ongoing.

Explanation

The correct preposition is "in" when referring to something located within a place or area.

The Sahara Desert is one of the most remarkable deserts in the world.

Explanation

We use "for" when referring to the purpose or reason for a gift.

So, "She gave me a watch for my birthday" is the correct and natural expression.

Explanation

"Hour" begins with a silent h, so it sounds like it starts with a vowel.

Therefore, we use "an" before "hour" — "150 miles an hour."

Explanation

Generally, jealous is followed by of.

Of is a preposition here.

He is jealous of my success means وہ میری کامیابی سے جلتی ہے

Explanation

"The" is used to refer to something specific or already known to the listener.

Since "blue T-shirt over there" is a specific item, "the" is the correct article.

Explanation

"The" is used when referring to a specific group, like "The Europeans" as a general class.

It's appropriate here to describe a known or general characteristic of Europeans.