问题
选择题
Do you know _____this time yesterday?
A．what she is cooking
B．what is she cooking
C．what she was cooking
D．what was she cooking
答案
答案：C
考查宾语从句。句意“你知道昨天这个时候，......”，宾语从句用陈述句语序，排除B、D；this time yesterday提示用过去进行时。故选C。