Which of the following sentences doesn’t  contain(包含) an object clause(宾语从句)?
#38136
A
Many people believe robots will do most of our work.
B
Scientists should be able to develop plants that grow on Mars.
C
People think that humans on Mars have to wear special boots to make themselves heavier.
D
We all know the next Olympic Games will be held in Beijing.
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I know a place________we can have a big meal. 
#37434
A
that
B
where
C
which
D
what
Alice has gone to the classroom and she didn’t say ________.
#38026
A
when did she come back
B
when would she be back
C
when she came back
D
when she would be back