SMILEand CLEAR are web tools that are both from Michigan State University, and allow teachers (and students) to easily create clozes, drag-and-drop exercises, and sequencing activities. They also allow you to use audio and video with the activities, and will host them as well.
I’ve listed them previously on The Best Web 2.0 Applications for ESL/EFL Learners — 2007 and The Best Ways To Create Online Tests.
It looks like they’ve added even more great tools to their site that are free-to-use.
Barry Bakin, a talented ESL teacher in Los Angeles, has just written a post about one of them, called an Audio Drop Box.
Read his post, and check out all the other free online tools SMILE & CLEAR offer.