Finish the second sentence in such away that it has the same meaning as the original one

Finish the second sentence in such away that it has the same meaning as the original one
1) He couldn't meet you because of being busy
Because..............................................
2) We can't go for a walk because it rains heavily
Because of...........................................
3) Despite his hard life, he studied very well
Though.................................................
4) Tom will pass the examination even though he studied well
Despite................................................
5) My grandmother is very old. She can't work now
My grandmother is too..................................
My grandmother is so................................