Dr Yuan Longping grows _____ is called super hybrid rice, _____ has a high output.
| A．what; which | B．that; what |
| C．that; which | D．what; that |
In some parts of Asia, a person mustn’t sit with his feet _____ another person, _______ is
considered impolite.
| A．pointing at; it | B．pointed at; which |
| C．pointing at; which | D．pointed at; that |
______ make her father angry, Joan didn’t tell him her poor grade.
| A．In order to not | B．So that |
| C．So as not to | D．In order not to |
Samuel Clemens，______ Mark Twain, wrote many popular stories.
| A．was known as | B．known as |
| C．was known for | D．known for |
The old man used _____ in front of his house and he has got used to _______ like that.
| A．to sit; doing | B．to sitting; do |
| C．to sit; do | D．to sitting; doing |
You will ______ sooner or later if you keep working like that.
| A．break off | B．break down | C．break into | D．break out |