(I)
No matter we are on the MRT, in a mountain, or walking down the street, ~
= No matter we are on the MRT,
we are in a mountain, or
we are walking down the street, ~
连接词这样用没错吧！
可是第3 个短语是不是应该用we walk down the street ?!
(II)
Bell used the first phone call to change the way people communicated.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
请问这边是不是省略了什么字?!
谢谢！