Explanation

The idiom means accepting a task that is too difficult or too much to handle.

It suggests overestimating one's ability or time.

Explanation

 "Who" is used as the subject of a clause referring to people.

The clause "who wants a pen" describes "the one" — the person.

"Whom" is used for objects of verbs or prepositions.

"Whose" shows possession.

"Which" refers to things, not people.

Explanation

The sentence is in present continuous tense ("are telling"), so the passive form uses "is being told."

"You" becomes "by you" and "the truth" becomes the subject in the passive voice.

Explanation

'Dog' is the subject of the sentence — the one performing the action (barking).

Though the sentence starts with "There is," the real subject comes after the verb "is."

Explanation

“European” starts with a vowel letter but a /juː/ sound, so “a” is correct

Explanation

Explanation

The exclamation mark! (also known as an exclamation point in American English)

It is a punctuation mark usually used after an interjection or exclamation to indicate strong feelings or to show emphasis.

Explanation

• The original sentence is in direct speech: He apologized, "I did wrong."

• The verb "did" is in the past simple tense.

• When changing to reported speech, past simple usually becomes past perfect.

• Therefore, "I did wrong" becomes "he had done wrong".

He apologized that he had done wrong.

Explanation

Explanation

The word "security" originates from the Latin word "securitas," meaning "freedom from care" or "freedom from anxiety,"