—How did he break his head while swimming? — my warnings, he dived straight into the shallow water.
We human beings should be very careful with what we do with nature, _____power is beyond our understanding.
()I found the lecture hard to follow because it ____ when I arrived.
I haven’t finished my report, but I promise I ______ it by the end of the week.
It's a custom in China to have some tea or other drinks before the meal ________.
—What’s all that noise about outside?—Oh, I forgot to tell you. The road to the railway station ______.