Question

1 Choose the correct item.
1 The drive on my computer is having trouble reading / studying this CD.
2 The Moon orbits / rotates the Earth about once a month.
3 Cars produce exhaust fumes / smog that harm the environment
4 Scientists discover/ predict that the Earth
5 I always hold / keep a backup of my files
ПОЖАЛУЙСТА ПОМОГИТЕ
​

Answer 1

1)reading
2)rotates
3)smog
4)discover
5)keep