–I’m not good ____ remembering phone numbers. –Neither am I. A. in B. at C. on
Hey, boys and girls! Stop ____. I have something interesting to tell you.
Look! David is helping his mother _______ the room.
—Lily, here are your pens. Please _____.—OK, Mom.
—Bruce,how many students are there in your school?—Mmm, about .
—Do you plan your homework at home?—Yes, of course.