Drag each label to the correct location on the image. Which label provides the best evidence for each of the statements about the passage? An assistant who has been holding the machine in balance on the rail starts forwards with you The machine is placed upon a single-rail track facing the wind you do not feel the sensation of being thrown from your seat you perceive no change in the pressure of the wind on your face

Explanation is in the file

cutt.ly/nz6VGda

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.