According to the police, _______ some facts undiscovered.

_____ April 14, many people in Yu Shu lost their lives _____ the earthquake. [ ]

Is your watch like Bill’s and Ann’s ? ——No. But it’s almost the same as _________.

When I turned to the person ________ next to me, I recognized that he was my schoolmate.

He is mad_______ Lucy. He is ill .[ ]