Answer:

1.(You can ask the members of your family of "what is the source of your income")

2.Yes,the salary I receive is enough to sustain both my needs and wants.

3.In this time of pandemic we should save money so that you won't spend the money on things you don't need.

4.We can take good care of our family now in this time of pandemic by always reminding them to wear mask when going out,reminding them to wash their hands after going outside.