Though Jenny is the only child in the big family, she is never _______ about what to eat or what to wear.[ ]

My sister studied hard at school when she was young, which contributes ________ her success in her career.

I’ll take part in the school sports meeting.—______

It is believed that high achievers worktoward personal standards of excellence ______ material rewards.

_____ I saw him, I knew what had happened. [ ]