Butterflies ______ a sweet liquid produced by flowers, which bees and other insects collect.
| A．carry on | B．feed on | C．put on | D．focus on |
Some of the people often ask the same question the air has been polluted.
| A．whether | B．if | C．that | D．where |
Do you have any idea that makes The Voice of China so popular?
| A．what is it | B．what it is |
| C．how it is | D．how is it |
He came here in the hope he could learn about the cause of the accident.
| A．which | B．how | C．that | D．what |
—Why do you think the film star is getting less popular?
—I guess the way she wears is annoys her fans most.
| A．which | B．where | C．how | D．what |
According to Aristotle, we are we repeatedly do. Excellence then, is not an act, but a habit.
| A．which | B．when | C．where | D．what |