Question

read the introduction to marias personal narrative, \teaching saturday school.\
on saturday mornings, i wol arabic to the children who attend my mosque. i wake up at eight oclock and prepare my lesson as i eat breakfast. its hard work, but the look on my students faces when they wol a new word is priceless.
fill in the blanks in order.
taught . . . . understands
taught . . . . understand
teach . . . . understand
teach . . . . understood

Explanation:

1. The narrative uses present tense (wake, prepare) to describe a regular Saturday routine, so the first blank needs a present tense verb. "Teach" matches, while "taught" (past tense) does not.
2. The second blank refers to "they" (plural students), so the verb must be the plural present tense form. "Understand" is correct for a plural subject, while "understands" (singular) and "understood" (past tense) do not fit.

Answer:

teach . . . understand