Most of the visitors were happy just sitting around in the shade, _________ it had been a long, dusty journey on the train.
—I do believe the scientific explanation that when a tomb is opened, the fresh air disturbs the viruses inside it. What about you? —So do I. If _______ in, the disturbed viruses may cause illness or even death.
Our bodies are strengthened by taking exercise. ______, our minds are developed by learning.
It took several hundred years ______ paper-making spread to western countries.
—I’ll tell Daisy about the change of our plan tomorrow. —You ______ her yesterday.
Wouldn’t it be ______ wonderful world if humans could live in ______ peace?