Explanation

• She’s my best friend Hence I will lend her my car.
• وہ میری بہترین دوست ہے اس لیے میں اسے اپنی کار ادھار دوں گا۔
• ***
• "Hence" can be used in the middle of a sentence without punctuation.
• In this case, hence typically will be used to join two statements that have the same subject

Explanation

• The building is so Tall
• عمارت اتنی اونچی ہے۔
  
• **
• Tall is best to keep the meaning of the original sentence 
• The following sentence is the simple form of the sentence so we use the first foam of the verb

Explanation

• Shazia had opened the door before we arrived
• شازیہ ہمارے پہنچنے سے پہلے دروازہ کھول چکی تھی۔
• **
• Arrived is best to keep the meaning of the original sentence.
• **
• past tense and past participle form is had, so we use the second form of the verb "arrived"
• **
• he/she/it         arrives
• present participle  arriving
• past tense         arrived
• past participle arrived
• **

Explanation

• I hope you excuse my leaving early.
• مجھے امید ہے کہ آپ مجھے جلد چھوڑنے سے معذرت کر لیں گے۔
• **
• Leaving is best to keep the meaning of original sentence
• **
• leave ​Definitions and Synonyms ​‌‌‌

• present tense
  he/she/it	leaves
  present participle	leaving
  past tense	left
  past participle	left

• 
  

Explanation

• the car stopped suddenly, and we could hear the brakes screeching
• گاڑی اچانک رک گئی، اور ہم بریکوں کی چیخیں سن سکتے تھے۔
• **
• screeching meaning چیخنا
• Screeching is the best keep the meaning of the original sentence.
• 
  

Explanation

• These are some good rules to live by.
• یہ زندگی گزارنے کے لیے کچھ اچھے اصول ہیں۔
• **
• BY is best to keep the meaning of the original sentence
• **
• We use by meaning not later than to refer to arrangements and deadlines
• By and the passive.
• When we use the passive voice, we can use a phrase with by to say who did the action
• By meaning 'how to do something"
• We use by + -ing form to describe how to do something:
  

Explanation

Given sentence is in Passive voice and in Present Simple Tense.

We need to change it into active voice.

While changing the voice objects becomes subject and subject changes into object.

Explanation

Note:- While covering active into passive both parts should be made into passive.

Active Voice (Part 1): He took me to hospital.

Correct Passive Voice: I was taken to hospital by him.

Active Voice (Part 2): And the doctors operated me.

Correct Passive Voice: And operated by the doctors.

Present Indefinite Tense

Active Voice: Subject + Verb + Object

Passive Voice: Object + is/am/are+ third form of a verb + by + subject.

Explanation

Yet is an Adverb which is generally used with Present Perfect Tense. 

I do not think I have met him yet. 

Explanation

Active Voice: Who

Passive Voice: By whom

This is a sentence of Present Perfect Tense.

Have been and Has been  are the helping verbs of Present Perfect Tense