Question

what is the main problem with the verbs in this passage?
"Sialic acids are a highly diverse group of nine-carbon amino sugars. They are a component of glycoconjugates(mainly glycoproteins and glycolipids). Glycoconjugates is the general classification for carbohydrates covalently linked with other chemical species such as proteins, peptides, lipids and saccharides."

1. They are in the passive voice
2. They are buried verbs
3. They are boring "to be" verbs​

Answer 1

Answer:

they were being questioned