“This is ______ most useful reference book,” a teacher from ______ European country told us in class.
| A．the; a | B．a; 不填 | C．不填; 不填 | D．a; a |
Accustomed to _______ the steep mountains, she had no difficulty reaching top.
| A．climbing | B．climb | C．having climbed | D．have climbed |
Her father _________ in the USA for another year so that she could work toward her master's degree.
| A．agreed her to say | B．permitted her stay |
| C．let her staying | D．approved of her staying |
After the fashion show, she was always ________ the beautiful clothes.
| A．obsess with | B．obsessed with | C．obsess to | D．obsessed by |
It was Tom as well as his friends that ________ for the serious accident.
| A．was to be blamed | B．were to blame | C．was blaming | D．was to blame |
In the _______ of proof, the police could not take action against the man.
| A．lack | B．shortage | C．absence | D．failure |