—My cousin is good at all his subjects at school, but he never ________.—What a ________ boy! We should learn from him.
I don’t know _________.
The MP3 ______ too much. He ______ 200 yuan _______ it .
The art club is for members only. You can’t go in _______ you are a member.
She likes doing her homework _______ the radio _______.
In winter, we must pay attention to _________.