They _______ a certain amount of working experience through volunteer work.
| A．attempted | B．accumulated | C．abandoned | D．accomplished |
Having been praised by the teacher，the little girl ran back home，______.
| A．happily and satisfied |
| B．eager and excitedly |
| C．happy and satisfied |
| D．anxiously and excitedly |
Despite their______ of interest，Fleming kept trying to develop the chemical ______ it would be safe and effective.
| A．lacking；in order to | B．lack；so that | C．lack；so as to | D．lacking；so that |
Helen always helps her mother even though going to school ______ most of her day.
| A．takes up | B．makes up | C．saves up | D．puts up |
We regret to inform you that there are no tickets ______ for Friday's performance.
| A．available | B．useful | C．convenient | D．affordable |
Mr.Wang ______ two boys to send the sick boy to the nearest hospital.
| A．arranged | B．has arranged | C．had arranged for | D．has arranged for |