Your paintings are so great, David! When did you learn ______?—Three years ago.

While I _ a Zhengjian Evening Paper inthe sitting room, the doorbell rang.[ ]

Why did you laugh just now?— John wanted to tell usvery funny joke, but he forgotend himself.

There arein the reading room, but many of those books aren’tto read．

Could you tell me_____ yuanxiao in china?— Usually at Lantern Festival.