Clothing made of man-made materials has advantage over ____ made of natural ones like cotton, wool or silk.
There is a piece of news from Shandong Province saying: ______in the school-bus for the whole day, the child died for lack of air.
I regret to say your performance didn’t reach the relevant requirements, ______you cannot be accepted by the company.
In order to make students have a good knowledge of science subjects, they are encouraged to______ their own science experiments.
No one knew where my grandfather was, and many came to _____us in searching for him.
—Is the People’ Great Hall _______to ordinary visitors? —Of course.