根据中文提示,选择英文句子,把序号填在括号里。
1. 你在那儿做什么?[ ]
A. What are you doing there?
B. What are you doing here?
2. 他们正在吃蔬菜吗?[ ]
A. Are they eating the vegetable?
B. Are they eating carrots?
3. 他们喜欢甜食。[ ]
A. They like salty food.
B. They like sweet food.
4. 请对我做一个实验。[ ]
A. Do an experiment on me, please.
B. They are doing an experiment.