________ difficult it might be, I will try my best to work it out.
The couple overjoyed ________ words on hearing their son survive the airplane crash by a miracle.
Around the world there are many young people________a great deal of money on listening to pop or rock music.
A British scientist has predicted that parents who lose children in accidents may be able to clone “copies” to________ them within 50 years.
________warm atmosphere in our English class has left________deep impression on all the people present.
-Boy,which website are you surfing on the Internet now? -Oh,Mum...________I tell you everything I do?