How are you getting along with your English? —_____, I’m not good at English. But I will work harder on it. [ ]

How can I _______ you?—You can ____________ me at 55874391.

What do you think of the young woman singer?-It’s hard to say, but her voice __________ beautiful.

David, is this your sister’s bike?— No, it’s not ______. It’s my brother’s.

While Helen ________ the piano，her mother came in．