1 across. Illustrious selection of people. 4 letters, 2 letters and 4 letters.
7 across. Of an extended flight. 4-4 letters.
8 across. 1,000 – you. 4 letters.
9 across. You betcha! 4 letters.
10 across. Tad. 7 letters.
12 across. Young follower of trends. 11 letters.
14 across. Plot-driving concept. 7 letters.
16 across. Teacher. 4 letters.
19 across. Questionable. 4 letters.
20 across. Indebted. 8 letters.
21 across. Particle-separating spinner. 10 letters.