1 (1) brothers (2) goes (3) us (4) helping (5) ski
2 (1) time (2) they aren't (3) How (4) What (5) Whose
3 (1) Are these your pencils?
(2) We are playing basketball now.
(3) Does he walk to school every day?
(4) Don't open this box.
(5) Jane can speak Japanese very well.
4 Nancy, what are you doing now?