Answer:
1. A
2. B
3. A
4. A
5. B
Step-by-step explanation:
1. Steven did so well in his speech today that he must have rehearsed it many times last week.
2. David spent such an enjoyable vacation in Europe this summer that he plans to return there as soon as he saves enough money.
3. In order to complete the highway on time, the workers worked so quickly that there was even no time for talking.
4. Most TV programmes are so boring that nobody watches them.
5. We had such a horrible day that we felt depressed.