大明想知道 Sam来自哪里时.应该怎么说____A.what are you doing .Sam? B.where are you from.Sam?C.what are you going to do.Sam?
He went into the room and _______ the door.
What did you see _______?
_______ you _______ at six o’clock yesterday?
Will you please say it again? I _______ quite _______ you.
When _______ Lee _______ school this morning?