Explanation

The preposition "at" is used to indicate a specific time.

So, "I will come at 2 o'clock" is grammatically correct.

Explanation

We generally use in before evening, morning, afternoon etc. 

In is the preposition here. 

We get up early in the morning ہم صبح جلدی اٹھتے ہیں

Explanation

Correct sentence: "…so that he can go on a month long tour of Europe."

"On" is used with journeys or tours.

Explanation

"For a while" indicates a duration of time (how long the action continued).

Example: "I have been ringing the doorbell for a while."

"For" + time period = Duration (e.g., for hours, for days).

"Since" + specific time = Start point (e.g., since morning).

Explanation

She was crying for help

وہ مدد کے لیے پکار رہی تھی۔

Here, "for" is a preposition that connects the action (crying) with the reason or purpose (help).

Explanation

"For" indicates purpose or reason.

The phrase "for your safety" means to ensure you stay safe.

Explanation

Generally shy is followed by of.

Of is a preposition here.

Shy of someone means کسی سے شرمانا

He was shy of fighting. 

Explanation

Along is a preposition. 

Along the road means سڑک کے ساتھ ساتھ 

Explanation

Explanation

The phrase "suggestions for improving" is the correct collocation.

Correct sentence: "The rest of the class listened carefully and gave suggestions for improving the plan."