_____ he met with the difficulty did he realize the importance of group work.
| A．Even though | B．Not until | C．Only before | D．Ever since |
In the dark forests , some large enough to hold several English towns.
| A．stand many lakes | B．lie many lakes |
| C．many lakes lie | D．many lakes stand |
has been announced, we shall have our sports meet next week.
| A．That | B．It | C．As | D．What |
_______2010 in China, the number of students ________ to study art is rising a lot.
| A．Compared with; choosing | B．Comparing to; to choose |
| C．Composing with; chosen | D．Compared to; choose |
When and where to go for the on-salary holidayyet.
| A．are not decided | B．have not been decided |
| C．is not decided | D．has not been decided |
People in some countries waste water______ people in others don’t have enough to drink.
| A．while | B．because | C．if | D．so |