Question

Jack     his pet dog every day. The dog must feel sad when he’s alone all day long.

A．should walking

B．should to walk

C．had better walk

D．had better to walk

Answer 1

C

試題分析：句意：杰克最好每天都要遛遛他的寵物狗。那條狗一整天都單獨(dú)呆著一定感到難過(guò)。had better do sth意為“最好做某事”；should do sth意為“應(yīng)該做某事”；故選C。