Question

Correct the sentence below.

Answer 1

Answer: (B) doubling to twelve the number of satellites now known to orbit

Explanation:

Answer 2

Answer:

Option B

Explanation:

Because in the 1st part of sentence,past indefinite was used that's why in the second part there should use past continuous.

Another reason is that in all the options word orbiting has used but there should use word orbit as it is used in option B.