Considering the advantages of the method, they decided to ________ it.
| A．arrange | B．possess | C．adopt | D．adapt |
She says that she’ll have to close the shop ________ business improves.
| A．if |
| B．unless |
| C．after |
| D．when |
I don’t believe we’ve met before，________I must say you do look familiar.
| A．therefore |
| B．although |
| C．since |
| D．unless |
He smiled politely ________ Mary apologized for her drunken friends.
| A．as |
| B．if |
| C．unless |
| D．though |
—Coach，can I continue with the training?
—Sorry，you can’t________you haven’t recovered from the knee injury.
| A．until |
| B．before |
| C．as |
| D．unless |
I had hardly got to the office________my wife phoned me to go back home at once.
| A．when |
| B．than |
| C．until |
| D．after |