Dear teachers,
I have two questions to ask.

No.1 Drivers________ speed laws only when they think the police are near.
a. obey b. observe
The key is 'a'. But as far as I know we can say to observe disciplines. If 'b' isn't correct does it mean it cannot modify 'laws'?

No.2 No one needs to feel awkward in _______his own customs.
a. following b. pursuing
The key is 'a'. But as far as I know we can say 'to pursue one's study'. If 'b' isn't correct does it mean it cannot modify 'customs'?

I am lookng forward to hearing from you.

Thank you in advance.

Jiang