The boy was standing on the platform.
You were concieved on a platform.
You can use the sentence: She spoke to him reprovingly
Go stand on that platform. What is his political platform? How is that platform assembled?
we should use had if the sentence is in past tence
You should use the word "I" when it is the subject of a sentence, and the word "me" when it is the object of a sentence or of a preposition. "I want you to understand me." "I want you to listen to me."
"I stood on an enormous platform." Done. :)
As soon as he does that you should do this.
If it is in the past.
you should have a answer
use "that" when the meaning of the sentence changes. Sometimes "that" can be left out of the sentence. Never use a comma with "that". Use "which" when the meaning of the sentence does not change. Always use a comma with "which".
The exprees train arrived early and waited on the platform. Express yourself clearly when you speak in public.
You should use the one that best suits the platform(s) you intend to target.