--What on the desk? --There a pen and some books.A. are, is B. is, isC. is, are
.“ S ”表示衣物尺寸为___________。
Good morning, Frank! _______________
What’s this _______English? It’s ______ pen.
26个字母中有5个元音字母,它们是___________。
Don’t you know you are teaching the fish to swim? They are all grow-ups.