Sensory, motor and mixed are the three kinds of what body structures?

How many items make up a gross? What is the name of a three-dimensional figure with 8 plane faces? Rhythmic, artistic and trampoline are three Olympic disciplines of which sport? Three Georgians have served as Speaker of the House: two Democrats and, from 1995 to 1999, which Republican? What three-letter name is shared by U2's breakthrough 1983 album and the band Eric Burdon teamed with for "Spill the Wi… Which instant-messaging program, introduced in November 1996, took its three-letter name from the phrase "I seek you"? What was the three-letter title of Mae West's 1926 Broadway play that she wrote, produced and directed, and served jail… What three-letter word begins the titles of the Best Picture Oscar winners for 1930, 1949 and 1950?