6.Water is composed _______ hydrogen and oxygen.
A. of
B. with
C. for
D. about
7.They prefer to _______ the rest of the morning walking in the garden.
A. spending
B. spent
C. be spending
D. spend
8.Please remind me _______ her this note.
A. leave
B. to leave
C. leaving
D. left
9.The two girls competed with each other ______ the highest mark.
A. for
B. with
C. to
D. against
10.At any rate I did not succeed _______ myself understood by you.
A. making
B. made
C. to make
D. in making