Gunpowder,__________ we all know, was invented in ancient China.
| A．it |
| B．which |
| C．as |
| D．that |
Though he said he was a doctor, ________, he knows nothing about medicine.
| A．as a matter of fact | B．as well | C．as a result | D．as if |
_______by the teacher, she took two books away from the reading room.
| A．Permit | B．Permitting | C．Permitted | D．Permits |
When he come back to life, he found himself________at the entrance to the valley.
| A．lie | B．lied | C．lay | D．lying |
I will look into the matter as soon as possible. Just have a little___________.
| A．wait | B．time | C．patience | D．rest |
----Can I take your______,Sir?
----Please wait for a moment.
| A．seat | B．order | C．menu | D．food |