.
. People used to think that heavy objects always fell faster than light ________.
| A．ones | B．the ones | C．these | D．those |
----May you _______ the experiment!
----Thank you very much.
| A．success in |
| B．succeed to do |
| C．succeed in doing |
| D．succeed doing |
---Never give up and you'll succeed.
---Thank you. i won't ______ you.
| A．hurt |
| B．fail |
| C．depend |
| D．harm |
All of the flowers now raised here have developed from those _______ in the forest.
| A．once they grew |
| B．they grew once |
| C．they once grew |
| D．once grew |
The famous basketballer, _______ tried to make a comeback, attracted a lot of attention.
| A．where |
| B．when |
| C．which |
| D．who |
I saw some trees the leaves of _____ were black with disease.
| A．that |
| B．which |
| C．it |
| D．what |