______ at the airport, he telephoned his wife and bold her what he would do when he got home.
| A．Once arrived | B．As soon as he reached |
| C．When he got | D．Upon arriving |
Henry's news report covering the conference was so _____ that nothing had been omitted.
| A．understanding | B．comprehensible |
| C．comprehensive | D．understandable |
The lost car of the Lees was found _____ in the woods off the highway.
| A．vanished | B．abandoned | C．scattered | D．rejected |
Our research has focused on a drug which is so _____ as to be able to change brain chemistry.
| A．powerful | B．influential | C．monstrous | D．vigorous |
The boy slipped out of the room and headed for the swimming pool without his parents' _____.
| A．command | B．conviction | C．consent | D．compromise |
In this factory, suggestions often have to wait for months before they are fully _____.
| A．admitted | B．acknowledged | C．absorbed | D．considered |