From Twitter
You can do it!
Teacher: ＿①＿ you study, you'll do well. Student: ＿②＿ I'm a genius!
Teacher: Yeah, ah--right.

Choices:
1 problem has 2 possible answers; Choose wisely:
a. whether or not
b. unless
c. provided
d. as long as

Answers And Explanations:
① as long as or provided because these mean 'if'
② unless because it means but not if + S + Subject Complement/Predicate... / if + S am not + Gerund/if + S + don't + Bare Infinitive