Few words- more grammatical- ÍT TỪ- NHIỀU VĂN PHẠM

She sees         what happens.
She saw         what happened.
She saw         what would happen.
She saw         what was happening.
She saw          what had been happening.
She sees         what will happen.
She has seen  what has happened.
She has seen  what has been happening.
She had seen  what would happen.
She is seeing  what has happened.
She is seen     what happens.
She was seen what happened.
She was seen what had happened.
She was seen what had been happening.
                          (tobe continued)