中号的缩写是 。A. L B. S C. M
To make our city more beautiful, rubbish _________ into the river.
— Does your mother often _______ to you? — Yes. But she always ________ the same words.
---The students of Class 7 are going to the seaside this weekend. ---Remember _____ them not to keep _______ alone in the sea. It’s dangerous.
The twin sisters have learned a lot ________ they came to China.
--It ______ be the new headmaster. -- No, it ______ be him. He went to Beijing yesterday.