Her hands were shaking too hard to get the key in the lock, so I opened the door to the school.

Her voice began to shake so hard that she couldn't say any- thing else.

Her knees shook so hard that she was afraid they might to go jelly at any moment.

But I was shaking too hard to take it up at that moment.

I knew that my legs were shaking too hard to stand up.

He was suddenly shaking too hard to remain standing.

Her hands shook too hard to remove the key.

Or maybe just start the engine and leave, if she hadn't been shaking too hard to drive.

Claudia sat down again, mostly because she was shaking too hard to stand.

Now the tree shook so hard that it began to bend.