Because they are used in the present continuous tense - they denote that an action is still presently happening.
Answer is the simple present tense of answer.
present tense..ofcourse..its so simple..
Sit is the simple present tense.
the simple present tense and the present tense.
You should use the simple present tense when you are talking about something that is happening now.
The simple present tense of can is just can.
Creep is the simple present tense.
Contribute is the present simple tense.
The simple present tense of "get" is "gets" for third person singular (he/she/it) and "get" for all other pronouns (I, you, we, they).
He,she,it + pastes (Simple Present tense} I,we,they + paste (simple present tense)
The simple present tense is do.
The simple present tense of finish is "finishes."