单选题  Investors were advised to give a proper ______ of the risks facing their business before increasing production.

单选题  During the 19th century the metric system was ______ by many countries as the system of measurement.

单选题  During our office hours, you can expect to get a quick ______ to any question you might have.

单选题  What is the ______ behind this sudden change?

单选题  If such a large wall is only used for decoration, it will ______ lead to a waste of space.

单选题  The new computer is not ______ with the company's other machines and therefore has to be replaced.

单选题  Born and raised in a loving family, Adam has always been ______ to helping the people in need in his community.

单选题  Harry was ______ late for work and should try his best to show up on time each day in the new year.

单选题  Tired muscles ______ that your body has had enough for the time being, so listen to your body and stop when you need to.