Fill in the blanks with appropriate modal:
I am sure we __________ succeed.
a. Might
b. May
c. Would
d. Will

Hint: Modal are words which provide us with the mood of a verb, mood in reference is considered to tense and adverb.

Complete answer:
Option a: Might – might is a modal which represents possibility and permission of an action in past tense.
Example: He said that we might go to a picnic.

Option b: May – May is a modal which also represents possibility and permission of an action but in future tense.
Example: he may go on a vacation.

Option c: Would – Would is a modal which states the happening of an event in the past tense.
Example: Jessie said that she would complete the project all by herself.

Option d: Will - A modal which acts as an auxiliary verb to state that an event will be happening in the future.
Example: I will sell my car.

The appropriate modal for the blanks is; ‘d – will’.
I’m sure we will succeed.

Note: Might can also be used in the blank but it will state uncertainty about the action of winning. In terms of winning the speaker of the statement should be determined and sure about his success, hence will be the most appropriate expression for the verb succeed.