Question

Meenal ________ (listen) to the radio when she __________ (hear) a loud noise in the kitchen.
was listening, hears
was listening, heard
listened, heard

.
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Answer 1

Explanation:

In molecular biology, two nucleotides on opposite complementary DNA or RNA strands that are connected via hydrogen bonds are called a base pair (often abbreviated bp). In the canonical Watson-Crick base pairing, adenine (A) forms a base pair with thymine (T) and guanine (G) forms one with cytosine (C) in DNA.

Answer 2

was listening

heard

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