a work of ____ , we can’t judge itsvalue by appearances

Thank you very much for giving me a hand when I was in trouble.——Don’t mention it. I only did what anyone else _______ in my place.

She spends __learning English every day．

Was it 80 years before Christopher Columbus crossed the Atlantic ______ Zheng He hadsailed to East Africa?

You should develop healthy eating habits _______ it is too late.