Read and complete the following sentence.
X – rays_________ by William Roentgen.
was discovered.
were discovered.
is discover
is discovered
are discovered.
Pregunta 2
Read and complete the following sentence.
Paper ________ from trees.
was made
were made.
is made.*
are made.
is make.
Pregunta 3
To write the description of a process we use linking words in the following order:
First-Then – After that- Finally.
First- After that- Then- Finally
First- Finally- After that- Then
Finally- First- Then- After that
Then – Finally- First- After that
Pregunta 4
Electronic signals are also called…..
voice waves
electronic waves
waves
ocean waves
big waves
Pregunta 5
When we use a mobile or a wireless network, we are using:
Radio cords
Wifi
Radio waves.
voice waves
Carrier waves
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