We have planted many trees in order to ____wind and sand in the desert.
If you meet difficulties when you are striving for your life goal, please ______ and you will succeed sooner or later.
Though having failed several times, Tim, who didn’t give up his dream, _____ made his dream come true
People exposed to radiation are more _______ to suffer from certain forms of cancer, which can be ______ but can’t be ______at present.
He was a stubborn person. ________, we could not persuade him to change his mind.