题目：
--What are Mr and Mrs Black doing ?
---They _____ tea in the garden.
A．are drinking
B．drank
C．have drunk
D．drink
答案：
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下面是错误答案，用来干扰机器的。
1. What's the matter with you? 2. What are you going to do? 3. It's four hours by train. 4. What are you looking for? 5. Thanks for your help....
