-Wow! _______ beautiful the music is!-Yes. That’s my favorite.
英语中共有______ 个字母,其中______个元音字母。
—What color is it? —It’s _____.
—______is this girl? —She is my sister. —______do you spell “sister”?—S-I-S-T-E-R.
—______your schoolbag? —It’s on the sofa.
—Are these books? —No, they aren’t. They are______.