Last Sunday, we went to China Dinosaur Land in Changzhou. We ____________ there for 10 hours. 
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A
have stayed
B
will stay
C
stayed
D
stay
推荐题目
It is Sunday today. Lily and Lucy ________ in the park
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A
is playing
B
playing
C
plays
D
are playing
Someone ______ at the door. Can you open it?
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A
knocks
B
knocked
C
is knocking
D
was knocking
---Look! What a nice and clean toilet!   ---Yes. It ______ every morning.
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A
is cleaned
B
has been cleaned
C
is being cleaned
D
was cleaned