📰 【Q1】（目標スコア：850点）

Subject: Reminder: Annual Staff Survey

Dear Employees,

As part of our ongoing effort to improve workplace satisfaction, we are conducting our annual staff survey.
Your feedback will help us identify areas for improvement in communication, teamwork, and leadership.

( 1 ) , please take a few minutes to complete the survey by May 15.

All responses will remain confidential, and results will be used only for internal purposes.

Thank you for your cooperation,
HR Department

(1)
A. Otherwise
B. In addition
C. Therefore
D. As a result

✅ 正解：B. In addition
📘 解説： 前の文で「調査の目的」を述べ、その次に「調査に参加してほしい」と追加説明しているので “In addition” が自然。
“Therefore” は結果を表すため不適切。

---

💼 【Q2】（目標スコア：900点）

To: All Staff
From: Office Management

We would like to inform you that the building’s main entrance will be under renovation from June 5 to June 20.
During this period, employees are asked to use the side entrance.

( 2 ) , please remind any visitors or clients of this temporary change when scheduling meetings.

Thank you for your cooperation.

(2)
A. Meanwhile
B. Consequently
C. In particular
D. Additionally

✅ 正解：D. Additionally
📘 解説： 「さらに〜してほしい」という追加依頼なので “Additionally” が適切。
“Meanwhile” は「その間に（同時進行）」で意味がずれる。

---

📢 【Q3】（目標スコア：920点）

Notice:
The company cafeteria will introduce a new payment system starting next month.
Employees will be able to use their ID cards instead of cash or credit cards.

The system is designed to reduce waiting time and improve convenience.
( 3 ) , all employees are encouraged to register their ID numbers before August 1.

(3)
A. However
B. Furthermore
C. For this reason
D. In conclusion

✅ 正解：C. For this reason
📘 解説： 理由（新システム導入の目的）→「そのために登録してください」という因果関係。“For this reason” がぴったり。

---

🧾 【Q4】（目標スコア：950点）

From: Customer Relations
Subject: Service Interruption Notice

Dear Valued Customers,

We regret to inform you that our online reservation system will be temporarily unavailable due to scheduled maintenance.
The maintenance is expected to last from 10:00 p.m. to 2:00 a.m.

( 4 ) , we recommend customers complete any reservations in advance.

We apologize for any inconvenience this may cause and appreciate your understanding.

(4)
A. Although
B. Moreover
C. Therefore
D. As soon as

✅ 正解：C. Therefore
📘 解説： 「メンテナンスで使えない」→「事前に予約してください」＝因果関係。“Therefore” が論理的。
“Moreover” は「さらに」で、理由にはならない。

---

🧠 総評

今回のPart 6は、接続副詞・因果関係の判断 がテーマ。
上級者でも「In addition / Therefore / However」などの使い分けでミスしやすいです。
TOEIC 900点以上を狙うなら、文脈を一読して自然な流れを判断する力を鍛えましょう。