____ the problem of method is solved, talking about the task is useless.
| A．Until | B．Since | C．After | D．Unless |
He hurried to the airport and got _______ the plane just in time.
| A．on board | B．in board | C．on the board | D．in the board |
________ people may refer to television for up-to-the-minute news, it is unlikely that
television _______ the newspaper completely.
| A．When; replaces | B．Although; has replaced |
| C．What; is to replace | D．While; will replace |
Jack, it’s ________ bad manners to blow your nose at ______ table.
| A．the; a | B．the; / | C．/; the | D．/; / |
The police always take advantage of dogs’ ____ sense of smell to search for something.
| A．sensitive | B．sharp | C．practical | D．tremendous |
---I was riding along the street and all of a sudden, a car cut in and knocked me down.
--- You can never be ______ careful in the street.
| A．much | B．very | C．so | D．too |