Environmentalists urged that more effective measures ___________by the government to reduce the pollution.
Sorry, I didn’t hear you. I to the music.
The fact has worried many scientists the earth is becoming warmer and warmer these years.
If one succeed, one must put his heart into his career.
The book was written in 1946, the education system has witnessed great changes.
My wallet isn’t in my bag. Where I have put it?