1_____there is no rain,farming is difficult or impossible

 【单选】It is no longer a problem （）the poor children in this district can go to school选项

If a student has a problem with classroom work，he or she should______.

The reason for making a decision is that a problem exists, or something is standing ______the way of accomplishing them.

My hometown is no longer the place ______it used to be.

Theoretically, a good screwdriver should last a lifetime, but it rarely _____, usually because it is used at one time or another as a substitute for some other tool.

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

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.