Fast review mode: answers are shown by default so you can skim quickly. Hide them if you want to self-test.
Tip: Quickly list all the letters that will work for the first word, and then strike out any that won’t work for the second. You should only be left with one letter, which is your answer.
Example: col (?) ram bel (?) oll d g t b The correct answer is t. By inserting “t” you can make the four words colt, tram, belt, and toll.
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