Thaum koj rov h7 teeb, koj puas paub meej tias qhov twg yog qhov zoo tshaj?

Qhov zoo tshaj plaws h7 suav nrog h7 coj, h7 teeb lub teeb thiab h7 cov khoom siv zais.

Cov h7 qhov muag teev yog txhua qhov zoo tshaj plaws.

Qhov zoo tshaj plaws h7 coj teeb yog ci dua, tab sis tus nqi yog khib me ntsis siab dua qhov qij halogen.

Qhov zoo tshaj h7 halogen teeb yog kev lag luam, tab sis lawv sov sov.

Kuv yuav qhia koj qee cov duab ntawm qhov zoo tshaj plaws h7 teeb raws li hauv qab no.

Zoo siab txais tos txhua tus neeg siv khoom los tham txog qhov zoo tshaj plaws h7 teeb nyob rau txhua lub sijhawm.