The father came to pick the little boy..... after school yesterday

the father came to pick the little boy..... after school yesterday 
A.on  B.up     C.with           D.in
.....of our club members help cook free meals for poor families in the city
A.some          B.any           C each            D. among
they need more volunteers to.....at the food bank this weekend
A .work         B. join           C. participate            D. organize
giúp mk vs ah