a long journey they arrived______ in Naples, where they stopped to trade with the local people.

the team finished most of their research work?—Yes, but the rest rather difficult

Scientists estimate that plants and animals lived _____ 3.5 billion years ago[ ]

I’d like to go ________ to help people, ________ when they are in trouble[ ]

He felt ________ when hearing that he had been admitted into the school badminton team. Which answer is WRONG