Students are ______for new knowledge to suit themselves to the future jobs in various fields_______ which they are unfamiliar.

. is Deng Ziqi from -Hong Kong.

28．She’ll never forget her stay there ________ she found her son who had gone missing two years before

Much to my surprise, she ______ tears ______ she read the letter.

__________car traffic in city centers and make the air cleaner, some countries made rules that drivers should pay extra money if they drive in the city centers.