Relax yourself every day,________ you'll be too tired to get good grades.
It’s really __________ comfort to the professor that his son has been admitted to __________ Harvard University.
This story, _____, is very fascinating: there are many interesting characters in it.
It is reported that very little use of these waste materials_______ in the past decades.
----What terrible weather! I really don't agree with it!----- ____________ .
______the bones under the sand,the scientists concluded that they came from the dinosaurs about 65 million years ago.