Verbseoul.
하다 verb
보관하다bogwanhadato keep

To say to keep politely in the present tense, use 보관해요 (boh-gwahn-hae-yoh). Below is the full conjugation of 보관하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
보관해
boh-gwahn-hae
보관해요
boh-gwahn-hae-yoh
보관합니다
boh-gwahn-hahm-nee-dah
Past
보관했어
boh-gwahn-hae-ssuh
보관했어요
boh-gwahn-hae-ssuh-yoh
보관했습니다
boh-gwahn-hae-sseum-nee-dah
Future
보관할 거야
boh-gwahn-hahl- -guh-yah
보관할 거예요
boh-gwahn-hahl- -guh-yae-yoh
보관할 겁니다
boh-gwahn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
보관하세요
boh-gwahn-hah-sae-yoh
Suggestion / Let's Polite (요)
보관해요
boh-gwahn-hae-yoh
Question Polite (요)
보관해요?
boh-gwahn-hae-yoh-?
Connective “and” — (고)
보관하고
boh-gwahn-hah-goh
Conditional “if” — (면)
보관하면
boh-gwahn-hah-myuhn
Noun form — (기)
보관함
boh-gwahn-hahm