He ___ without saying good-bye to them, for he always has good manners.
| A．mustn’t have left | B．may not have left | C．shouldn’t have left | D．can’t have left |
Not until I came home last night ______ to bed .
| A．Mum did go | B．did Mum go | C．went Mum | D．Mum went |
I think you should think twice .Once ______, the decision won’t be easily changed .
| A．making | B．to be made | C．being made | D．made |
The boy said he hadn’t broken the window ______ and would pay for it by doing a part-time job for Mrs . White .
| A．on purpose | B．by chance | C．in fact | D．in trouble |
Many interesting activities will be _____ in the summer camp to attract children .
| A．commanded | B．organized | C．recognized | D．requested |
Children who ______ learning disabilities should be given more attention .
| A．give in | B．suffer from | C．go through | D．care about |