Improving Multiple Choice question type
I would like to suggest a feature that is already implemented in an official online test called eYDS in Turkey.
In Multiple Choice (with sentence completion), when one of the options is clicked, the selected words/phrases appear in the blanks in the question text/sentence (see Multiple 1 and 2; Multiple 1 is before the option is clicked and Multiple 2 is after the option is clicked).
In the same test, this is best demonstrated in the Cloze Test section (Cloze 1 - the option has been clicked for Question 17; Cloze 2 - how the cloze text looks when the user moves on to Question 18). This is very useful because, otherwise, the passage is never visually complete before the test-taker's eyes.
Note: It is possible to see the eYDS in action by taking the sample test (http://esinav.osym.gov.tr/deneme) but only for Turkish citizens, I am afraid. You will need a valid ID number to log in.