— Cindy failed in the writing competition. She must be in a bad mood. — Let’s go and .
My friend pal and I often talk _______.
—Is your brother _______ TV?—No,he's _______ a book.
Listen,the girls ____ an English song.
Students in our school _______ know shouting in the library is not allowed.
Mother put a quilt (被子) _________ the sleeping boy to keep her warm.