_______ such heavy pollution already, it may now be too late to clean up the riv
题型：浙江省期末题难度：来源：
| _______ such heavy pollution already, it may now be too late to clean up the river. |
| [ ] |
A. Having suffered
B. Suffering
C. To suffer
D. Suffered |
答案
| A |
举一反三
from other continents for millions of years,Australia has many plants and animals not found in
any other country in the world. |
| [ ] |
A.Being separated
B.Having separated
C.Having been separated
D.To be separated |
| himself to supporting his brother’s son,he has to let one of his children leave school. |
| [ ] |
A.Having committed
B.Committed
C.Being committed
D.To commit |
| ___ countless failures, the scientist finally succeeded in discovering the chemical substance. |
| [ ] |
A. Suffered
B. Being suffered
C. To suffer
D. Having suffered |
Dina, for months to find a job as a waitress,finally took a position at a local advertising agency.
|
| [ ] |
A.struggling
B.struggled
C.having struggled
D.to struggle |
| from heart attack for years, Professor Wang has to take some medicine with him wherever he goes. |
| [ ] |
A. Suffered
B. Suffering
C. Having suffered
D. Being suffered |
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