---I have lost my new English dictionary.
-- _________
A:What a pity!
B:It's nothing.
C:It doesn't matter.
D:Not at all.
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- I heard Susan surprised her teacher by working hard.
- Yes, ______
A:her teacher worked hard.
B:Susan worked hard.
C:the teacher was surprising.
D:Susan was surprised.
---This is John.
-- ___________
A:Oh, I have never seen you.
B:Yes, I am glad.
C:Hello, John. Nice to meet you.
D:How are you?
---Which sweater do you like better?
--- ________.
A:Good idea
B:Yes, it's nice
C:Yes, please
D:I can't decide
2,4,12,48,240,()
A. 1645
B. 1449
C. 1240
D. 360