你不知道对方具体说的是哪个,你会说:A.Which one? B.Who’s he ? C.Who’s she?
They go _____ a picnic in spring. A. for B. on C. to
Who’s ____ father? The man in gray. A. you B. your C. you are
_____ orange, please? A. An B. \ C. A
Hi, where is your mother? She is with _____. A. I B. me C. my
____ you hungry? A. Are B. are C. Do