Which sentence does not contain any errors?

a.
do i have everyones permission form?

b.
how many is are in the word insisting?

c.
be sure to cross all your t's.

d.
our police station's phone number has seven 6's in a row.

Why does the narrator come to the house of usher

What is implied in this sentence from mark twain's "the ? 1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.

2points how might kafka's relationship with his father have affected his writing? what’s the answer