There is no reason to feel sad so try to smile.
A. There is no reason to feel sad so, try to smile.
B. There is no reason, to feel sad so try to smile.
C. There is no reason to feel sad, so try to smile.
D. No commas needed.

Random Topics:
Prepositions and Phrasal VerbsGerund or to InfinitivePassive Voice and Relative ClausesHow often - long - much - manyPast ModalsNounsGerund, Participle, Infinitive, or AppositiveConditional TensesThird ConditionalBe Going To vs. WillOther quiz:
Comma › ViewWhich sentence correctly uses commas?
A. I sat with Sara Jacob, and Pam at lunch today.
B. I sat with Sara, Jacob, and Pam at lunch today.
C. I sat with Sara Jacob, and Pam ,at lunch today.
Gerunds and Infinitives › View
Should we use a gerund or an infinitive in this sentence: Evelyn decided ___ (go) to the party.
A. going
B. goes
C. to go
D. to going
Tenses › View‘Where is Kate?’ ‘She (watch) TV in the living room.’
A. watches
B. doesn’t watch
C. is watching
D. watch
Future Tenses › View
Oh, somebody is knocking! I … open it.
A. are going to
B. am going to
C. will
D. is going to
