If your sister-, she would come.

1. invited
2. inviting
3. invites
4. were invited

Answer: invited

Explanation: conditional sentence – এর 2nd condition অনুযায়ী principle clause – এ subject + would /could /might + V1 থাকলে If clause – এ If + subject + V2 হবে। সুতরাং নিয়মানুযায়ী শূন্যস্থানে invited হবে।