Which sentence contains a verb acting as a noun?

fearing the flu, simone washed her hands a lot.

sailing is my aunt and uncle’s favorite activity.

the winds were gusting up to 35 miles per hour.

the keys should be hanging on the hook by the door

Writing about thing people usually do

What happens once in a minute twice in a moment and never in a thousand years?

Biologists recognize five levels of cell organization. the lowest and simplest is the cellular level. organisms here are either unicellular organisms, like protozoa, or colonial organisms. colonial organisms are composed of single-celled individuals that stay together to sustain the life of the whole colony. next on the scale of complexity is the level occupied by tissue. a tissue is a group of similar cells which perform a similar activity. tissues that are organized around a common function together make up an organ, the third level of complexity. the fourth level of organization is the system, formed by a group of organs which together perform a specific bodily process. the fifth and highest level is the organism level, in which body systems work together in a structure capable of independent life. main idea: