Only after they had discussed the matter for several hours a decision .
| A．they reached | B．did they reach | C．they reach | D．do they reach |
_______________ while writing, he locked himself in his study.
| A．Not to interrupt | B．Not being interrupted |
| C．Not to be interrupted | D．Being not interrupted |
The incomes of skilled workers went up. ______， unskilled workers saw their earnings fall.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
The further falling of the stock market as reported today has _______ a fresh wave of selling.
| A．given off | B．set off | C．put off | D．got off |
In the current situation, ___________ the dollar goes above 1.85 reais, investors sell the greenback to take some profit.
| A．whenever | B．however | C．whatever | D．whichever |
Thanks to Mr. Smith the father and the son eventually______________ after ten years' cold relationship between them.
| A．took up | B．made up | C．looked up | D．turned up |