Question

2.
Living cells exist in a variety of shapes; for
example, they
cube-shaped or flat.
)
were
2)
must be
3)
have been
4)
may be​

Answer 1

Answer:

Dear❣️

Explanation:

Cells have different shapes because they do different things. ... Animal cells come in many different shapes and sizes. The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does...

stay home stay safe ❤️

Answer 2

Answer:

may be

Explanation:

it can't be were, as this is past tense

it is not compulsory that they should be in a particular shape and hence must be can't be the answer

have been suggests that they are not in different shapes now, which is not the case

May be is the correct answer as the cells can either be flat or cube shaped