Food safety is ________ important, so the government spares no efforts to prevent food pollution.
Almost ____ of the students in this class ____ glasses, that is, ____ of them.
The number of people invited ____ fifty, but a few of them ____ absent for different reasons.
---- Guess what! I have passed my driving test last week.---- ______!
San Diego’s Zoo and Sea World are places where residents and visitors alike can enjoy r animals and plants in shows and exhibits, __ _ in part by San Diego’s climate.
Not until all the fish died in the river how specious the pollution was.