Explanation

The number of men= 5/11 x 33 = 15,

so out of 33 teachers,

men are 15

and women are 18. 5:6 can be written as 15:18.

For making it 1:1, 15+3: 18,

so 3 male teachers would be hired

Explanation

The correct sentence is:

"Either of the plans is workable."

 "Either" is singular, so it takes a singular verb ("is").

The second option is incorrect because "either" should be followed by "is," not "are."

Explanation

dielectric, insulating material, or a very poor conductor of electric current. 

When dielectrics are placed in an electric field, practically no current flows in them because, unlike metals

Explanation

I would rather apply for a foreign scholarship than study here. this is the right sentence.

"Then" is used to show time. 

"Than" is used to show a comparison. 

Explanation

InCorrect the sentence: We often walk across the fields

correct sentence:  We often walk over the fields

Explanation

Know is a verb.

Knew is the second form

while

known is the third form of Know.

Passive Voice = Object + is/am/are + third of verb + to + subject.

Explanation

On 9 February 2021, Turkiye unveiled an ambitious 10-year space program for the nation.

President Recep Tayyip ERDOĞAN announced Turkey`s National Space Program with a ceremony held on February 9, 2021. 

Explanation

Martello Towers, sometimes known simply as Martellos

Martellos are small defensive forts

Martellos were built across the British Empire during the 19th century, from the time of the French Revolutionary Wars onwards

 the tower was completed in 1565. 

Explanation

یہاں ولڈ استعمال ہوا لہذا اس کے ساتھ ور اے گا۔

incorrect:  If I am you, I would never invite her again

correct: If I were you, I would never invite her again

This is a hypothetical sentence. 

Were is used with I in such sentences.

Explanation

incorrect: After she tied her laces, she breaks her glasses 

correct: After she tied her laces, she broke her glasses

Something happened in the past. So, we have to use the past tense.

Break is the first, Broke second while Broken is the third form of the verb.