700R has reverse and first but no second....Help

[72MARIO]

Oky I drove to my night course on monday everything worked fine. when I left there was first but no second or third. so I drove part way home in first. then I turned down a one way street with no cars around and slammed it into reverse the went foreward still no second then I did it again it worked fine the rest of the way home. When I went to take it to work this morning there was no second again. About a month ago I had it pop out of gear as it was suppos to shift into overdrive did not think much of it.

Also this weekend I blew a tranny line down a dirt road I noticed it start slipping so I shut off the motor right away saw the brake and fixed it with a piece of hoes and some hose clamps. I only had a liter of tranny fluid to put in so I put it in and drove to a gas station and topped it up (it needed 3 liters) drove home no problems.

What do you think could be wrong ?

Thanks