I don’t like math ________ it’s too difficult for me.
A. and B. so C. because
________ birds are singing in the tree.
A. A lot B. Lots of C. Many of
We have a class meeting _______ Monday afternoon.
A. on B. in C. at
There ______ a book, some boxes and some keys on the table.
A. is B. has C. are
The sign ________ means “No parking”.
A. 
B. 
C. 
It’s good ________ old people cross the road.
A. helping B. to help C. helps
