I’m told that www．languagepractising．com is a free website ____ learners can not just learn various languages but also chat online．

___certain livings as birds not becausethey have long legs or short legs,but because they all havefeathers.

her bag, she found a handkerchief just in time.[ ]

Have you told him the news?—I ______, but I forgot.[ ]

下列词语中画线字的注音，正确的一项是（ ）