There is no doubt _______ nearsightedness is a serious problem among the youth of our country.

The new law wouldcome into ___on the day it was passed

3 ______, I can spare no time for it now I’ll have to finish my homework first

These people with different personalities could frequently have quarreled, but actually, they spent the year together_______

The government has taken some measures to solve the shortage of electricity, but it may be some time ____________ the situation improves