—Why, Jack, you looks so tired!
—Well, I（）the house and I must finish the work tomorrow.

A. was painting

B. will be painting

C. have painted

D. have been painting

起发、蓬松的品种及体积较小的面点品种，蒸制时要（）。

A、旺火长时间

B、中火短时间

C、旺火短时间

D、中火长时间