To my parents’ relief, both my brother and I followed the family _____ and became doctors.

In the______of proof , the police could not take action against the man .

.Has the Channel Tunnel improved the _______of goods between the British Isles and mainland Europe?

Giving small children some money as a gift during the Spring Festival is a common ______ in China, which may seem strange to foreigners?

He, a Nobelist, made great ______________ to researching in this area.