A:s≥4
B:0<s≤2
C:2≤s≤4
D:0<s≤2或s≥4
80÷4=____ 60÷3=____ 74-8=____ 33×2=____ 76-50=____
“候”字共有____笔,第三笔是____。
— Please tell me___________.— Next Saturday.