等差数列{a_n}中，a₁+a₂+a₃=40，a₄+a₅+a₆=60，则a₁₀+a₁₁+a₁₂=______．

How I wish I       a doctor and I       the       girl.

A．am; can save; dead

B．was; can save; death

C．were; could save; dying

D．were; could save; died