The limits of a person’s intelligence，generally speaking，are fixed at birth，but________he reaches these limits will depend on his environment.(2012·安徽，27)

填入下面横线上的句子，与上句衔接最恰当的一组是（ ）公安干警及时赶赴现场侦察，中午12时，

Lily seems to know a lot about Hong Kong, but she has never been there

The boy is Mr. Smith’s ________ son.

I’ll be away on holiday. Would you mind lookingafter my parrot—- Not at all. _______________.