Question

fix the verb that doesnt match the tense of the verb in bold. while her husband checks into the hotel, mrs. wu wrote postcards to their friends.

Explanation:

The bold verb "checks" is in present simple tense. The verb "wrote" is in past simple tense, which doesn't match. To make the tenses consistent (since the actions are happening simultaneously in the context), we can change "wrote" to "writes" (to match present simple) or change "checks" to "checked" (to match past simple). But considering the structure with "while" (indicating simultaneous actions), a better fix is to make "wrote" match the present tense of "checks" or vice versa. If we go with matching to the present tense of "checks", we change "wrote" to "writes". Alternatively, if we match to past, "checks" becomes "checked" and "wrote" stays. But let's check the context: if the actions are happening now, present tense is better. So the incorrect verb is "wrote", and we can change it to "writes" (or change "checks" to "checked" and keep "wrote"). Let's choose to adjust "wrote" to "writes" to match the present tense of "checks".

Answer:

Change "wrote" to "writes" (or change "checks" to "checked" and keep "wrote"; the main fix is to make the tenses consistent, for example, the corrected sentence could be: "While her husband checks into the hotel, Mrs. Wu writes postcards to their friends." or "While her husband checked into the hotel, Mrs. Wu wrote postcards to their friends.")