Solution:
I am looking forward to our picnic scheduled in the next month.

Solution:
When their examinations were over, the children gleefully neglected the books they had been reading.

Solution:
A cheerful man endures all difficulties and hardships with a smile on his face.

Solution:
Sunita decided to set aside some time everyday for prayers.

Solution:
Option A: cast Explanation: This option doesn't fit the context of the sentence. The word "cast" doesn't convey the idea of being unable to afford something financially. Option B: forget Explanation: This option doesn't fit the context of the sentence either. The word "forget" doesn't convey the idea of financial constraints. Option C: let Explanation: This option also doesn't fit the context of the sentence. The word "let" doesn't convey the idea of being unable to afford something financially. Option D: leave Explanation: This is the correct option. The word "leave" is often used in the context of being unable to do something due to financial limitations. In this sentence, "leave" conveys the idea that the person can't even afford daily food, let alone buying a house. This option fits the context and meaning of the sentence.

Solution:
Santosh looked very happy and elated when he heard that his proposed scheme was accepted by the committee.

Solution:
The waiter hasn't bought the coffee yet I've been here an hour already.