Millie's research paper isn't up to standard_________ she has worked at it for two weeks.( )
A.sinceB.unlessC.ifD.although
When he school,he saw his classmates playing volleyball.( )
A.arrivedB.got toC.reach
Our school has fifty﹣six teachers.( )
A.womanB.womenC.woman's
His grandparents are used in the morning.( )
A.to exerciseB.to exercising
C.exercise
cold weather it is!( )
A.How aB.What aC.What
There a pencil and some pens in the box.( )
A.isB.areC.aren't