The math problem is too difficult ,I can’t__________ .

I can’t find Mr. Smith .Where did you meet him this morning ?—It was in the hotel ______he stayed .

They ask about the things and teachers ______ they still remembered in the school.

The careless driver is _______ for the trafficaccident_______ yesterday.

Where is Xiao Wen Here’s a letter for her.—She _____ in the living room.