17  A. master         B. assistants           C. assistant        D. servant
18  A.finally            B. secondly             C. firstly              D. thirdly

có ai ko giúp mk vs
----- Nội dung dịch tự động từ ảnh -----
On March 3, 1847. Alexander Graham Bell was born in Edinburgh. He was a Scotsman although
he later (13)
(14)
experimenting with ways of transmitting speech over a long distance. This led to the greatest
(16)_
experiments and (18)
first to Canada and then to the USA in the 1870s.
America, he worked with (15)
at Boston University. Soon, Bell started
of the telephone. Bell and his (17)
Thomas Watson, conducted many
came up with a device that they first introduced in 1876.
13. A. emigrating
B. emigrate
C. emigrated
D. emigration
Đáp án của bạn:
A
B
D
14. A. In
В. On
С. Of
D. For
Đáp án của bạn:
A
В
D
15. A. deaf mutes
B. deaf-mutes
C. deafen
D. deaf mute
Đáp án của bạn:
A
D
sá6. A. inventing
B. invents
C. invented
D. invention