﹣When did the earthquake in Lushan happen?﹣It happened __________ 8:02 __________ the morning of April 20, 2013.A.on; in B.at; on C.at; in
_______useful the information he gave us is !
-----Do you know _____ this teddy bear belongs to? -----Let me see. Oh, it’s _____.
Where is my ________other sock? I can’t find it.
Excuse me. Could you tell me ______?
—Mr. Wang, please _____ how to get there and the cost of the trip. —All right. I’ll make it at once.