—Mama, why can’t I work the maths problem out?—Oh, let me see. Well, you ________ a figure here. Got it?
.----Is she older than you? -----Yes, she is older than I ___ three years.
Lincoln died ____ the morning ___ April 15, 1865.
I haven't seen her ____ the past few years.
What have you done ____ my picture-book?
.---Do you like working as a waiter? -----Yes, but I get tired ___ the whole day.