what time is it begin?begin要不要加s

what time is it begin?begin要不要加s classes begin begin要不要加s? is,it's,the,in,at,evening,time,o'clock,begin,begins,six,what what time will tommorow's meeting begin? it's time（）begin our class. What time do you begin()? make begin me 是"从我做起"吗?begin要不要加ing? Class begins为什么Begin要加S It is time ____class.Iet is begin now. it's time for class _____.A.to begin B.beginning C.begin D.b what time（ ）the guitar class（ ） a.is begin b.does begin c.do what begins fall from the trees.begin为什么加s