Question

141. Somebody had stolen my handkerchief.
142. The director had warned the students to pay the fees.
143. Nobody had answered the questions.​

Answer 1

Gravity as a universal force

The strong force and the weak force operate only inside the centers of atoms. The electromagnetic force rules objects with excess charge (like electrons, protons, and socks shuffling over a fuzzy carpet), and gravity steers objects with mass.

Answer 2

Explanation:

141. Somebody had stolen my handkerchief.

142. The director had warned the students to pay the fees.

143. Nobody had answered the questions.

What has to be done in the following questions.