________ to sunlight for too much time will do harm toone’s skin.

You shouldn’t be worried. You have done an excellent job and are ______to be admitted to the company.

Nowadays the roles of husband and wife are not as ______ defined as before, especially when both parents work and earn money for the family

_______ is no possibility________ the engineer can complete the project within two weeks

下列各句中，加点的成语使用恰当的一项是（ ）