Answer:
a. He should be very committed to his job.
b. I believe we can be selfless all the time.
c. There could be many fundraisers in this country.
d. Hunger will be one of our main concerns.
e. Dedication should be important when you work with charity.
f. Kindness and generosity must be always appreciated.
Explanation:
When substituting these words into each of our sentences, you want to look for the part of the sentence where the subject of the sentence is ending and the remainder of the sentence is beginning. Words like "is" and "are" can be easily substituted for phrases like "should be" "could be" "can be" "will be" and "must be".
