Explanation

When reporting commands or requests, we use "to" in indirect speech.

In this case, the direct speech "Don't be late" becomes "The teacher told us not to be late."

Explanation

آب آب ہونا محاورہ ہے۔ اس کا مطلب شرمندہ ہونا ہے۔

Explanation

"Reflection" is a noun as it refers to the image of something seen in a mirror or water.

It names the action or result of reflecting.

Explanation

Onyx, Carrara, and Calacatta are all forms of marble.

• Onyx is a type of marble that is characterized by its banded or striped pattern, typically in shades of black, white, and gray.
• Carrara marble is a type of white or blue-gray marble that is quarried in Italy and is known for its high quality and durability.
• Calacatta marble is a type of white marble that is also quarried in Italy.

Explanation

Heinrich Rudolf Hertz discovered electromagnetic waves in 1887, experimentally confirming James Clerk Maxwell's predictions.

Hertz demonstrated the existence of radio waves, a type of electromagnetic wave, using a simple apparatus.

Explanation

A standard single-sided, single-layer DVD holds 4.7 GB of data.

A double-layer DVD can store up to 9.4 GB.

A single-layer HD-DVD holds 15 GB of data.

A dual-layer HD-DVD provides up to 30 GB of storage capacity.

Explanation

The Council of Common Interests (CCI) in Pakistan consists of seven members, including the Prime Minister as the chairperson, four provincial Chief Ministers, and three members from the federal government.

It addresses inter-provincial and federal-provincial matters.

President Dr Arif Alvi on May 13, 2022 approved the reconstitution of the Council of Common Interests (CCI) under Article 153 of the Constitution, which would be headed by Prime Minister Shehbaz Sharif.

Explanation

Balochistan is the leading region for dried fruits in Pakistan, with major centers also located in Khyber Pakhtunkhwa.

Dried fruits, including dates, pine nuts, and raisins, are important exports.

Dates, grown extensively in Sindh, Balochistan, and Punjab, are exported in large quantities.

Explanation

Darling Harbour is a popular tourist and recreational area in Sydney, New South Wales, Australia.

It is a bustling waterfront district with shops, restaurants, museums, and entertainment venues.

It is also home to the famous Sydney Aquarium and Taronga Zoo.

Explanation

A is twice as good as B, so A's work rate is 2 times that of B.

Since A takes 30 days less than B, let's assume B takes x days to complete the work. Then, A takes x - 30 days to complete the same work.

Since A is twice as good, A's work rate is 2 times that of B, so A completes the work in half the time it takes B. Therefore, x - 30 = (1/2)x

Solving the equation, we get x = 60 days for B and x - 30 = 30 days for A.

Since A and B are working together, their combined work rate is the sum of their individual work rates. So, the total work is completed in (60 * 30) / (60 + 30) = 1800 / 90 = 20 days.

Therefore, the correct answer is: 20 days