英语 (3 11:28:26)Only by ______- your attention  ______what   you'reearning can you learn it wellA focus ;  on         B focusing ;on  Cpaying ;on     Dpay;on

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英语 (3 11:28:26)Only by ______- your attention  ______what   you'reearning can you learn it wellA focus ;  on         B focusing ;on  Cpaying ;on     Dpay;on
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

英语 (3 11:28:26)Only by ______- your attention  ______what   you'reearning can you learn it wellA focus ;  on         B focusing ;on  Cpaying ;on     Dpay;on
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

focus attention on和pay attention to是固定用法 然后因为by后面要用ing 所以选B

你的题在手机上显示不了

B
focus one's attention on:将注意力集中在...
表达的意思比pay one's attention好，且pay应该与to搭配。
only by doing sth can sb ...是固定结构。By后面接ing也是一定的，不是吗？

B

选B

英语：only to my only英语是什么意思 关于英语倒装句造句.倒装句造句.1,Only by doing ____________________could_____________________.2,Only in a _________________________can _______________________.3,Only then did ________________________________________________.4,Not only di 英语 (3 11:28:26)Only by ______- your attention  ______what   you'reearning can you learn it wellA focus ;  on         B focusing ;on  Cpaying ;on     Dpay;on only only only only only Only only only only only only only only Only