The English papers weren't easy ( ) him.
A.in B.at C.for D.on
Please write your name ( ) the top of the paper.
A.in B.at C.on D.for
Is your little sister old ( ) to go to school?
A.too B.enough C.very D.quite
Mathematics ( )diffcult for me.
A.being B.is C.be D.are
I sat there and looked ( ) my papers ( ) two hours.
A.at,for B.for,at C.for,in D.at,after