After working for two hours, the essay started to take shape, and he began to hopethat he might finish before the deadline.

• A. After working for two hours, the essay started to take shape, and he began to hope
• B. When the essay started to take shape after he had worked on it for two hours, he began to hope
• C. When the essay started to take shape after he had worked on it for two hours, he begun to hope
• D. When the essay started to take shape after working on it for two hours, he began to hope