No sooner ______ down on bed ______ the telephone rang.
Some scientists say that the tomato is technically a fruit,__it is eaten as a vegetable.
We think anyone whose careless actions_____serious results should be punished.
While I was looking through the news online,_.
Since the earth’s resources are getting fewer and fewer,recycling industry certainly__big benefits in the near future.
Nowadays,it is common to see people staring at their mobile phones instead of reading a real book,______many experts are worried.