Internet shopping will ready when people make sure that it is safe.[ ]

In order to gain a bigger share in the international market, many state-run companies are striving ______ their products more competitive. [ ]

The teacher always reads a story for the children ______ a day .

the environment of fiercecompetition, the only way John could imagine _______ stress was to get tougherby making greater efforts

________ the starscarefully, and you will find that they are not shining themselves. [ ]