Take a look at the sentence again:
A strong wind __________ through the trees, loosening clumps of moss, dead
branches, old kites, and baby squirrels, all of which fell to the wet ground
below.
The sentence requires the past tense of blow, an irregular verb. Blew is the simple past form.
Verb | Simple Present | Simple Past | Past Participle |
blow | blow(s) | blew | blown |
Had blew, the form you chose, illegally combines the simple past with the auxiliary verb had. Before you continue, review the rules for irregular verbs.
Go back to the sentence to try again.