----______have you been learning to swim ? ----Half a year.
___________, Amy. Is this your schoolbag ?A .Sorry B. I’m sorry C. Excuse me
This is _____ ruler, and that is ______ ID card.A.an;an B. a, an C. an,a
This is my _________ , and those are my _________ .A. sister;brother B. sister;brothers C. sisters;brothers
_________ is my pencil box? A.Where B. What C. When
--- When Mary’s birthday? --- It’s September.A. am; on B. is; in C. is; on