Question

Q11. 1. Fill in the blanks with a suitable modal.
a. ------------ is a modal verb which shows strong obligation
1. can
2. could
3. will
4. must
b. --------------- is used to show absence of obligation
1. must
2. can
3. need not
4. had to​

Answer 1

Answer:

1) must

2) need not

Explanation:

Hope it helps!

Answer 2

1,must

2, need not

I think there is no need to explain