I regret _____ hard at school, or I would have succeeded in passing the exam.
| A．not to work | B．having not worked |
| C．to have not worked | D．not having worked |
What a great weight I felt taken off my mind ________ I heard I had passed the College Entrance Examination!
| A．while | B．the moment | C．until | D．before |
The generous man devoted all he had _______ the victims, because of which he was highly praised.
| A．to help | B．helping | C．helped | D．to helping |
— I hear you have written a new book.
— Yes, it should _______ in a month or so.
| A．try out | B．come out | C．turn out | D．go out |
Tony can’t have received the invitation. ________, he would have attended your birthday party yesterday.
| A．Therefore | B．Otherwise | C．However | D．Besides |
The boy’s parents, who let him play football indoors, rather than the boy ________ to blame for the broken window.
| A．was | B．be | C．to be | D．were |