Explanation

The correct sentence is: "Let the mouse be killed." 

This is the correct passive voice form of the imperative sentence "Kill the mouse."

In passive voice, the structure is: "Let + object + be + past participle (killed)."

Explanation

The word "than" indicates a comparison, so the comparative form "taller" is appropriate.

Explanation

Opposition مخالفت

Explanation

America is a noun singular noun and singular noun takes a singular helping verb (has)

Explanation

Here the word 'every indicated this sentence belong to President Indefinite Tense. 

We use first form of verb (play) with I in this tense.

I play tennis every Saturday means میں ہر ہفتے کو ٹینس کھیلتا ہوں

Explanation

Genteel

Explanation

Waste is a verb which means ضائع کرنا

Explanation

Fossil fuel which

Explanation

We generally use of after comprise.

Comprise of means consist of.

Of is a preposition here. 

This house comprises of four bed rooms یہ گھر چار بیڈ رومز پر مشتمل ہے۔

Explanation

This structure describes how you travel somewhere.

by + train, car, boat, plane, taxi, bus, coach

Has he come by train? کیا وہ ٹرین سے آیا ہے؟