"What do a comb, a brush, and a mirror have in common" is the correct form, with the two commas that have been added. (The second comma is optional, but the first one is not.). The subject of the sentence is "a comb, a brush, and a mirror", three distinct things joined by a cumulative conjunction (and). This subject is obviously plural and requires the plural verb form "do".
Note that if "and" were changed to "or", which is an alternative rather than a cumulative conjunction, the correct form would be "What does a comb, a brush, or a mirror have in common?"
Both "brush and dustpan" and "dustpan and brush" are correct phrases to describe these tools. The order can vary depending on personal preference, but they both refer to the same set of cleaning tools used to sweep up dirt and debris.
(verb) The dentist recommends that you brush your teeth after meals. (noun) He used the brush to clean and comb the horse. (noun) You should clear away any dead brush from your yard, as it can be a fire hazard. (verb) When digging for fossils, carefully brush away loose rock and dirt.
She found a hair from the hare caught in her brush.
The future tense of "brush" is "will brush".
The singular possessive form for the noun brush is brush's.
It can be a common noun and also a verb. In the following sentence, first it is a common noun and then it is a verb. You brush your hair with a brush.
Brush your teeth is more commonly used but both are correct
sing in the mirror with a hair brush
He used a brush instead of a roller to paint the walls. She had to brush the snow off her car before driving to work.
Oh, dude, like, technically, that sentence is grammatically correct. You've got your subject "Electronics," your verb "is," and your complement "a subject about which you know very little." So, yeah, it's all good grammatically, but like, maybe you should brush up on your electronics knowledge? Just saying.
I use a hairbrush to brush my hair
The boy tranished with the same brush.
it is considerable to brush your teeth everyday
That is the correct spelling of "health" (well-being). The similar word is "heath" (brush, or brush-covered land).
The noun 'brush' is a singular, common, concrete noun; a word for a thing. The word 'brush' is also a verb: brush, brushes, brushing, brushed.
because it's tail is shaped like a brush
Back and forth And around in circles.