She learned to playpiano all by herself.
Please help ______ .
We can use Wechat（微信） to talk with each other online.—Really? Could you please show me how ______it?
Hello! ______ Lisa speaking. Is that Linda speaking?—-Sorry, she is not at home.
We can go to Shijiazhuang by train.—is it? — About twenty-five yuan. [ ]