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Explanation

• May, should, and can are modal verbs.
• Other modal verbs include could, shall, might, will, would, and must.
• Modal verbs express possibility, necessity, ability, permission, or obligation.
• They are followed by the base form of the main verb, e.g., She can swim.

Last verified on 05-10-2026

Explanation

• “Was run over” is the correct passive voice construction.
• “Run over” means to hit someone or something with a vehicle.
• The structure is was + past participle → was run over.

Last verified on 05-10-2026

Explanation

• “All” is used independently and refers to everything/everyone.
• Therefore, in “All is well,” it functions as an indefinite pronoun.

Last verified on 05-10-2026

Explanation

• Coded entries used to gain access to a computer system are called passwords.
• Definition: A secret string of letters, numbers, or symbols.
• Purpose: User verification and account security.

Last verified on 07-08-2026

Explanation

• A strong password should contain a combination of letters, numbers and special characters.
• Alphabetic characters: A–Z, a–z
• Numeric characters: 0–9
• Special characters: @, #, $, %, !
• Strong password: Long, unique, and difficult to guess.

Last verified on 05-10-2026

Explanation

• Main country: Botswana
• Region: Southern Africa
• Other countries: Namibia and South Africa
• Approximate area: 900,000 km²
• Type: Semi-arid sandy savanna

Last verified on 05-10-2026

Explanation

• Silviculture is the science and practice of establishing, growing, managing, and harvesting forest trees.
• It deals with the growth and development of forests.
• It aims to maintain healthy and productive forest resources.

Additional information:

• Forestry: Science and management of forests and forest resources.
• Agriculture: Cultivation of crops and rearing of animals.
• Arboriculture: Cultivation and management of individual trees and shrubs.

Last verified on 05-10-2026

Explanation

• In SONAR, the wavelength of the sound wave does not change simply because the submarine is farther away.
• Wavelength depends on the frequency of the sound and its speed in the medium, not on the distance traveled.

Additional information:

• SONAR: Sound Navigation and Ranging
• It uses sound waves to detect and locate underwater objects.

Last verified on 05-10-2026

Explanation

• The correct preposition after “approve” is “of” when expressing agreement or acceptance.
• The correct phrase is “approve of hunting.”
• “Approve of” means to consider something acceptable or satisfactory.

Last verified on 05-10-2026

Explanation