Language learning isn't hard itself. The attitude you have decides if you can learn it well at last.A. what B. who C. which
—________is the sweater? —It’s fifty yuan.
We can give old things away to people________.
I learned how________the new computer.
—How long have you________your new bike? —For two weeks.
—________she________doing her homework yet? —Yes,she has.She________it just now.