语法填空
Last Friday, my friend David called me and invited me and our friend Tom to a party in his university. Tom and I are in____ same class. We both wanted to go to the party, but there was a problem—we'd have a final exam on the ____ (come) Monday.
“Don't worry. We can come back on Sunday and won't miss the exam,” really____ (want) to go to the party, Tom said. So I decided to go____ him.
The party was great and we____ (true) enjoyed ourselves there. However, we stayed up late on Saturday night and slept all day on Sunday and didn't make it back to our university until Monday morning. We missed the exam. Then we went to our professor's office and explained____ we missed the exam. We lied that there was a flat tire（车胎漏气）on our way back to the university. Our professor ____ (agree) that we could take the exam the following day.
When it was time to take the exam, Tom and I____ (take )to different rooms. After we opened the test paper, we saw only one question, “Which tire?”
Neither Tom nor I answered the question. Instead we told our professor the truth. Luckily, he later gave____ (we) the real test paper . And both Tom and I made a____ (decide): never to lie again.
，（x代表某反应物或生成物）之间的关系，正确的是（ ）
