_____in the mountains for a week , the two students were finally saved by the local police．
A．Having lost B．Lost C．Being lost D．Losing
When he heard the news , he stared at me ________．
A．in amazement B．in disguise C．in brief D．in particular
The head of the company promised to deal with matters of this sort _____he returned to his office．
A．until B．while C．by the time D．the moment
The disk ,digitally ______in the studio, sounded fantastic at the party that night．
A．recorded B．recording C．to be recorded D．having recorded
Scientists are convinced _____the positive effect of laughter _____physical and mental health．
A．of ;at B．by; in C．of ; on D．on ;at
We had wanted to finish our task by noon, but it didn’t quite ______．
A．find out B．give out C．hand out D．work out
