[Q]: How does the sentence end?

Mary put the unused furniture in the den before decorating the dining room, because the 
OPTIONS:
- den would not be used during the party.
- dining room would not be used during the party.

[A]: den would not be used during the party.
QUES: Continue writing.

In order to talk faster, Adam began reading from a script instead of relying on memory. The 

OPTIONS:
- script prevented him from talking faster.
- memory prevented him from talking faster.
+++++++++
ANS: memory prevented him from talking faster.
Problem: How does the sentence end?

Natalie wanted to cook Victoria a surprise meal for their birthday and 
OPTIONS:
- Natalie tried to keep it a secret.
- Victoria tried to keep it a secret.
Answer: Natalie tried to keep it a secret.
sentence: The rail service had problems but the bus service did not because the  OPTIONS:
- rail service was very chaotic.
- bus service was very chaotic.
complete: rail service was very chaotic.
The gardener tried to put the plant in the pot but the 
OPTIONS:
- plant was too large.
- pot was too large.
plant was too large.
Problem: Continue the following story.

I always use reusable bag rather than plastic bag when I shop because the 
OPTIONS:
- reusable bag is friendly for the environment.
- plastic bag is friendly for the environment.
Here's how I want to continue it:
reusable bag is friendly for the environment.