Our city will be one of the cleanest areas in our country in the 21st century._____ shouldn’t be any doubt about it now.
-- He was given a free five-day trip to Hainan. -- He _______ it since he has worked so hard.
Can you imagine _______ alone on the lonely island for ten years?
He had dreamed of going there for a long time. But he _______ he would have such an unpleasant experience.
He makes people pleased with _______ by making them first pleased with _______.
He is always helping people without expecting anything _______.