His mother _______his son’s being admitted into college.

His book, which _______ last week, should be another best-seller. 

 (山东省潍坊市高三教学质量检测)       ! The rescue workers are coming.

－ I came all the way to inform you of the time and place of the meeting.－You could have __________ yourself the trouble by calling me. 

If you meet difficulties when you are striving for your life goal, please ______ and you will succeed sooner or later.