問題文全文(内容文)：
空所に入るのは?

The time might come ( ) global warming can be solved.

1. which
2. when
3. who
4. what

問題文全文(内容文)：
NT Third Edition Stage3 Lesson3-1 のKeyPoint例文解説です。
今回は『不定詞』について解説しています。

【使用例文】
① You were foolish to play football on such a hot day.
② It was careless of them to forget their water bottles.
③ It is kind of you to help me with my report.
④ Meg has decided not to stay up late.
⑤ She studied hard in order not to fail the math test.
⑥ Take care not to catch a cold before the test.

問題文全文(内容文)：
英語力を確認するために、以下の問題に挑戦してみましょう！
(1問目：空欄補充、2問目：正誤)

My uncle doesn't smoke at all, but he （　） a heavy smoker.
1. used to be　2. was used to be　3. would be　4. would have been

If you learn ①from a bitter experience, you change how you behave so that it does not happen again ②or so that, if it ③will happen again, you can deal ④with it better.

問題文全文(内容文)：
意外と知らない！？each otherの使い方を紹介します！（実は所有格もあるよ）

問題文全文(内容文)：
英語が苦手な人のための英語の基礎の基礎「英文法の品詞」についての説明です。