(1) Is your sister a high school student? ——Yes, she is.
(2) Were they playing baseball at that time? ——No, they weren't.
(3) Does Keiko use this bike every day? ——Yes, she does.
(4) Did John read the book? ——No, he didn't.
(5) Is he going to wash his father's car? ——Yes, he is.
質問があれば何でもどうぞ!