Clouds that form as small white flakes or scaly globular masses covering either small or large portions of the sky are（）.

When we use the word（）we mean that an idea or theory is being applied: that whatever the teacher does, certain theoretical principles are always borne in mind.

Do you prefer tea or coffee?（）

Clouds that form as small white flakes or scaly globular masses covering either small or large portions of the sky are（）.

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

Duty is an act or a course of action that people ______you to take by social customs, law or religion.

Don’t ______ that rope, or you might fall.

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

If you do not know the subject, you will not understand what is said or written, even if English is your mother （） what is said or written.