How long will Mr. Welsh be in training？A．1 weekB．2 weeksC．3 weeksD．4 weeks

— Well, may I know how long the training will be？— _______A、It will last six months.B、It

How long should a student be at school in most states according to the law？A．Twelve years.

How many countries will be in the list of "Super Aged" nations in total in five years？A．3.

—A（How long) will you finish B（mending) the coat？—Its hard C（to say). Perhaps in D（an) hou

－－ ________ will Mr. Green be back？ －－ In a week

Nobody yet knows how long and how seriously the shakiness in the financial system will the