【C2】A．stoopedB．stoppedC．stoodD．stepped

Mr. Cutler will ______ as president.A．step outB．step downC．step fromD．step through

【C12】A．arrivedB．calculatedC．stoodD．speculated

Not until it was completely dark______working.A．had they stoppedB．they stoppedC．they didn"

【C15】A．pointedB．cleanedC．pickedD．stepped

【C9】A．stopB．holdC．stayD．step

【C8】A．prohibitedB．stoppedC．suppressedD．prevented