How was Kettering's invention of the electric cash register similar to that of the automobile self-starter? Choices
A: they both save time by eliminating the need for hand cranking
B: they both were quickly replaced with better inventions
C:They both saved money
D: they both needed to be replaced often

that there are poor conditions

the mood is annoyed. they wish sandy was there do to the job right and since they dont like they way it came out now they are annoyed.

there purpose is to entertain

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.