Поможть там 6 завдань, обов039;язково напишть чому та чи нша

Поможть там 6 завдань, обов'язково напишть чому та чи нша вдповдь.

1. Look! It ___so we cant go to the beach
a) to rain b)rains c) is raining d)rain
2. I saw Mary___ the window.
a) opens b) to open c) opening d)is opening
3. I am sorry for __you about it.
a) dont tell b) not tell c) dont telling d) not telling
4. Before ___home she had a short test
a)have coming b) come c)coming d) to come
5. Since 2003 they ___ their son twice.
a) visiting b)visited c)have visited d) visits
6.I am proud of ___his student.
a) I am b) to be c) to being d) being