如果你第一次见到Alice,你会怎样和她打招呼?____A. Hi, Alice B. Hello, Alice C. I’m John, nice to meet you.
Talk to your teacher and you will get help ________ you have a problem.
We have friends to help us fight against pollution, and trees are one of ________.
Now, people regard drinking tea ________ a culture more than a habit.
Our mother earth gives us ________ we need in our daily life.
Three bridges ________ over the river five years ago.