难度：★ 考点：宾语从句
1. -Do you know the lady ______is talking with Mr. Smith?
-Yes, she's our new chemistry teacher, Miss Brown.
A. who B. which C. whom
2. These animals are in danger. We should think ________ to protect them.
A. what can we do B. what we can do C. how can we do D. how we can do
3. -Have you got any idea for the summer vacation?
-I don't mind . It will be OK if there is sun, sea and beach.
A. where do we go B. where we go C. when we go
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