—________ ?— H-E-L-E-N.
We all should make a contribution to ______ our environment.
Neither my classmates nor my teacher_____ chess better than me.
_____ the development of the country, most people are living happily.
More than _____children took part in activities last month.
--- It was a heavy snow last night. Are we all here now?--- Yes, and _____ of us was late for school.