It is "wash/washes".
Answer is the simple present tense of answer.
Sit is the simple present tense.
I/you/we/they wash. He/she/it washes. The present participle is washing.
the simple present tense and the present tense.
The simple present tense of can is just can.
wash
Contribute is the present simple tense.
Creep is the simple present 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."