We have to wait for the sponsor to send the invitation letter, and then we write a signature and submit it to the school for review, and then we know that we can get less subsidies.
We have to wait until the organizer sends out the invitation letter, and then we write and submit it to the school for review, before we know that we can get less subsidies.
We have to wait for the organizer to send out the invitation letter, and then we will sign it and submit it to the school for review, only then will we know that we can get less subsidy.