People who have studied ancient instruments are hoping to learn more about the culture that ______ this ancient flute.
| A．produce | B．produced | C．is producing | D．was produced |
There is clear evidence ______ the most difficult feeling of all to interpret is bodily pain.
| A．what | B．if | C．how | D．that |
The rare fish, ______ from the cooking pot, has been returned to the sea.
| A．saved | B．saving | C．to be saved | D．having saved |
More highways have been built in China, _____ it much easier for people to travel from one place to another.
| A．making | B．made | C．to make | D．having made |
To stay awake, he finished a cup of coffee and ordered ______.
| A．the other | B．other | C．the others | D．another |
Graduation is a good time to thank those who have helped you ______ the tough years.
| A．through | B．up | C．with | D．from |