Multiple choice and true/false reading checks encourage guessing and don't necessarily represent student retention of reading. These are great questions that can be answered in just one or two sentences. Answers can vary, but it will be very clear if students did or did not read. Also, you can assign different questions to different sections of the class, have the students answer on notecards, take a quick glance and group accordingly. Those who have not read can be identified immediately and redirected, while those who have can move on to the activities of the day.