下列各组字母中,全部是元音字母的是_____.A. a, e, r B. i, u, e C. o, p, u
—How long can I _____ the VCD?—A week.
—What do you usually do _____ weekdays after school?—I usually read books.
—_____ does Kangkang meet his friends?—Four times a month.
The boy likes playing _____ basketball very much.
Bob often _____ his homework after dinner.