Fill in the blanks with must or ought to:
(a) Animals too have feelings. We____ kind to them.
(b) All the children____ bring their water bottle with them.
(c) One____ keep one's promise.

Dear student,

Here are the answers:

(a) Animals too have feelings. We ought to be kind to them.
(b) All the children must bring their water bottle with them.
(c) One ought to keep one's promise.

Please note: Ought to is used to talk about moral obligation or duty. Must is used to express the necessity.

Regards