In the park , the number of the visitors is tightly ____ to avoid damaging the environment or putting stress on the animals.
| A．limited | B．intended | C．expected | D．encouraged |
. Your help is _____ for the success of the project.
| A．indispensable | B．indicative |
| C．inevitable | D．inherent |
When she heard from the hospital that her father had died, she _____ into tears.
| A．burst | B．went | C．exploded | D．fell |
. He _____ his engagement just before the wedding.
| A．broke out | B．broke away from |
| C．broke off | D．broke up |
The reference she made to her friend, the poet, was interesting but too _____ for anyone to appreciate.
| A．drastic | B．dull | C．obscure | D．distinct |
We forgave his bad temper because we knew that his son's illness had put him under great _____.
| A．emotion | B．excitement | C．crisis | D．stress |