(2010·辽宁东北育才学校高三第一次模拟) 6、Tom often has to be called several times ______ he comes downstairs for dinner.
A. before B. until C. when D. then
(2010·辽宁东北育才学校高三第一次模拟) 6、Tom often has to be called several times ______ he comes downstairs for dinner.
A. before B. until C. when D. then
A