I:
1, T
2, F (check the sand)
3, F (check among the rocks)
4, T
II:
1, T
2, F ( in US)
3, T
4, T
5, Yes, he is
6, The harmonic telegraph used to send multiple .... single wire
7, phonautograph used to draw the shape of the sound waves
8 It happened between ..... in another room
@Mấy câu mik "....." thì bạn nhìn trong bài giùm mik
@Xin ctlhn với ạ