my sister has taken part in this non - profit organization for two months (began)
--->
It takes her three hours to complete all her homework today (completing)
---->
Do it right now, or you will be punished (if)
--->
Jim thinks bird watching and horse riding are boring (finds)
--->
I have never spoken Chinese before (first)
--->
my sister has taken part in this non - profit organization for two months (began)
---> My sister began taking part in this non - profit organization for two months
It takes her three hours to complete all her homework today (completing)
----> She spends 3 hours completing all her homework today
Do it right now, or you will be punished (if)
---> If you don't do it right now, you will be punished
Jim thinks bird watching and horse riding are boring (finds)
---> Jim finds bird watching and horse riding boring
I have never spoken Chinese before (first)
---> This is the first time I spoke Chinese