填空题
A.they B.this C.that D.thing
A．they can be lost or stolen B．they can never be lost or stolen C．we don’t have to fear that they will be lost or stolen D．we won’t lose our money even if they are lost or stolen
A．pick up a watch B．hide the fact that he had found the watch C．pick up the watch that has slipped off his wrist D．pretend that he had found the watch