题目内容
15、Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
A．had he begun B．he began C．did he begin D．began he
试题答案
15、C
Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
A. had he begun B. he began C. did he begin D. began he
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Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
- A.had he begun
- B.he began
- C.did he begin
- D.began he
Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
A. had he begun B. he began C. did he begin D. began he
查看习题详情和答案>>Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
A．had he begun B．he began C．did he begin D．began he
查看习题详情和答案>>Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
A. had he begun B. he began C. did he begin D. began he
查看习题详情和答案>>Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
| A．had he begun | B．he began | C．did he begin | D．began he |