Yunnan ______from serious drought since 2009, so it’s our duty to save water every day.
| A．suffered | B．has been suffering | C．has been suffered | D．have been suffering |
You may imagine what great difficulty I had ________ complicated ideas in simple English.
| A．expressing | B．to express | C．expressed | D．express |
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 |
I'm interested in a single room. Do you have any ________？
| A．convenient | B．available | C．possible | D．personal |
I ________ on a sofa because my grandparents have been here to spend the weekend.
| A．slept | B．was sleeping | C．have slept | D．am sleeping |