单项选择题

It's really nice ______ you help me ______ray biology.

A．of; to; with
B．for; to; in
C．of; for; on
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单项选择题
Lucy is coming to my house this evening. I'll give her ______to eat.
A．anything delicious
B．something delicious
C．delicious something
单项选择题
______ of the apples in the fruit market are soft and sweet.
A．Two-third
B．Second-third
C．Two-thirds
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