_______ it will do us harm or good remains to be seen

If the product does absorb moisture or ________ water, discard it

1_____education is the instruction that occurs when the instructor and students are separated by distance or time,or both

I had no ______of who I was or what I was going to be.

______ it or not , his discovery has created a stir in scientific circles.

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

Believe it or not, when first (introduce) ____ to Europe, tomato was thought to be poisonous.

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．

It is generally considered unwise to give a child___( )_____ he or she wants.

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

I think you should end it ______ it is too late, or you will be sorry for it.