Điền từ còn thiếu
----- Nội dung dịch tự động từ ảnh -----
future
to
1
and
in
past
installed
Score:
18:2
Đỗ Ngọc Á
ID: 1302241
Level 13
SUBMIT
Modern traffic lights are an American invention. Red-green systems were installed in
Cleveland (1) 1914. Three-colored signals were (2) in New York in 1918. They used
(3) be operated by hand from a tower in the middle of the street. The first lights of
this type appeared in London, on the junction between St. James Street (4)___ Piccadilly,
in 1925. Automatic signals were installed a year later. In the (5)___, traffic lights
used to be very special.
future
to
1
and
in
past
installed
Score:
18:2
Đỗ Ngọc Á
ID: 1302241
Level 13
SUBMIT
Modern traffic lights are an American invention. Red-green systems were installed in
Cleveland (1) 1914. Three-colored signals were (2) in New York in 1918. They used
(3) be operated by hand from a tower in the middle of the street. The first lights of
this type appeared in London, on the junction between St. James Street (4)___ Piccadilly,
in 1925. Automatic signals were installed a year later. In the (5)___, traffic lights
used to be very special.