Question

________ she ran to the classroom, the teacher had begun the class.

A．What time

B．By the time

C．At the time

D．During the time

Answer 1

B               

             
试题分析：考查连词。句意：到她跑到教室时，老师已经开始讲课了。By the time到……为止，到她跑到教室为止，发生在过去，老师讲课发生在过去的过去，用过去完成时， 故选B项。          
考点 : 考查连词。