Explanation

• The main window in a computer spreadsheet is called a workbook
• while 
• The title bar in MS Excel displays the name of the  worksheet
• **
• In Excel, when we create a new document, we always select a blank workbook, as you already have done in the previous chapter.
• When this blank workbook opens up, an interface you see is called a workbook window.
  

Explanation

The sentence structure "had been + verb (-ing)" indicates the Past Perfect Continuous Tense.

This tense is used to show an action that started in the past and continued for a certain duration before another past event.

Explanation

New born child has 300 bones.

Longest bone: Femur (thigh bone)

Shortest: Stapes (one of the 3 small bones inside the ear)

Human head has 22 bones

Explanation

 In 2010, the estimated population of Pakistan was approximately 173.51 

Explanation

 Sri Lanka is a significant exporter of textiles and garments

Additional information 

 Sri Lanka Capital is Colombo.

Sri Lanka Currency is Sri Lankan Rupee.

Sri Lanka official language is Sinhala; Tamil.

Sri Lanka located is in Continent Asia.

Explanation

 I am here for you.

Correct and natural — This is the standard, meaningful phrase that means “I am present and available to support you.”

Explanation

"The committee is meeting tomorrow."
"Committee" is a collective noun and is treated as singular in American English, so it takes "is".

Explanation

Euphoria جوش means a state of intense happiness خوشی  or excitement.

Explanation

ٹیسٹ کی تیاری کے لیے بار بار پیپرز میں آنے والے سپیلنگ ضرور یاد کریں

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Explanation

Are there any errors in the transposed data? If so, how many?