1. The secretary told us that the president had gone on business.
2. We found out that the plane had already arrived
3. He knew that his partner was coming the next day
3. He knew that his partner is coming tomorrow.
3. He knew that his partner would come the next day
3. He knew that his partner will come tomorrow.
3. He knew that his partner came the next day
3. He knew that his partner comes tomorrow.