The Smiths felt __________ about their daughter who had gone to the clinic for three hours.
| A．anxiously |
| B．anxious |
| C．eagerly |
| D．painful |
With Halloween approaching, there exists a real concern among parents and teachers __________ trick or treating will become a seriously anti-social activity.
| A．whether | B．what | C．that | D．how |
When first __________ to the market, the computer software was not a success due to its complexity in operation.
| A．introducing | B．being introduced |
| C．introduced | D．to be introduced |
Unfortunately, the element Madam Curie devoted all her life her death .
| A．to caused | B．causing | C．to be caused | D．to causing |
Out of the crowded bus , who was dressed in a black suit and waved to a woman.
| A．a tall man in his thirties stepped | B．stepped a tall man in his thirties |
| C．did a tall man in his thirties step | D．did a tall man step in his thirties |
— I want someone to write the composition for me.
— No. As a student, you ________ depend on yourself.
| A．shall | B．will | C．can | D．may |