A1: Circle L half-way; fall back with neighbour. Twos gate ones up and round.
A2: Ones half figure 8 up through twos, who wait for 4 beats then cross back to own side. All set and turn single.
B: With the next couple, R-hand star. With your original couple, L-hand star.
C: Ones lead down between next couple and cast back to place. All two-hand turn partner.
At the start of B please don't say “the ones look down, the twos look up”. This is a case or “more is less” - it makes people think about what number they are and which way is down... “With the next couple” (with an emphasis on “next”) is all you need.