--- I really don’t know how ________ this problem.--- Let me see.
People usually give us some apples_______ a treat.
Thank you for_______ my dog.
语音知识。从下列每组单词中找出一个划线部分不同于其他三个的选项。
--Have a good day!—_______! You, too.
---________-?—No,It’s on the sofa.