摘要： Having done three experiments without rest, they were out to go on with one. A. so tired; a fourth B. so tiring; the fourth C. too given; the fourth D. too worn; a fourth
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Having done three experiments without rest, they were ________ worn out to go on with ________ one．
- A.too; a fourth
- B.very; the fourth
- C.so; a fourth
- D.quite; the fourth