Young men should constantly _________their own state of mind so as to adapt to the circumstances in which fierce competition is going on .
46.It's no use___________over spilt milk. 47.
48.It was great joy_________he received the news that his long lost son would return home 49.
44. She heard a terrible noise, ______ brought her heart into her mouth.
45. The teacher gave the books to all the students except _______who had already taken them.
46 Our manager allowed _______to take a holiday next week.