Explanation

The CPU (Central Processing Unit) is responsible for processing data, not for long-term storage.

Permanent storage is handled by devices like hard drives or SSDs, not the CPU.

Explanation

Let Soomal's age be x.

Saira's age = x + 6

Five years later:

x + 5 + x + 11 = 40

2x + 16 = 40

2x = 24

x = 12

Saira's age = 12 + 6 = 18

Explanation

"To help" is an infinitive verb (to + base form of verb).

It expresses purpose or intention — what the speaker would be happy to do.

Explanation

It is a question that asks if something happened — a key sign of an interrogative sentence.

It starts with "Did", a common auxiliary used to form questions.

Explanation

The phrase should be "used to" (with "d"), as it refers to a past habitual action.

"Use to" is incorrect after "was" — past tense requires "used to."

Correct sentence: When I was a child, my father used to take care of me.

Explanation

A Vernier caliper provides precise linear measurements of small objects.

It can measure internal, external, and depth dimensions with high accuracy (usually up to 0.1 mm or 0.01 cm).

Explanation

The sentence uses a first conditional structure with "If + present tense", so the result clause should use "will" or simple present, not "would".

"Would" is used in second conditionals (with past tense in the "if" clause), so it's incorrect here with "treats".

Correct sentence: If a teacher treats students nicely, they will always listen to her.