英语 (3 11:28:26)
问题描述:
英语 (3 11:28:26)
Only by ______- your attention ______what you'reearning can you learn it well
A focus ; on B focusing ;on Cpaying ;on Dpay;on
答
首先锁定AB,因为是集中精神的意思
by 是介词,后面要有ING,所以选B