A, E
下から適切な関係副詞節を選んで加え, 英文を完成させなさい。 必要ならコンマを加えなさい。
1. Summer vacation is a time.
2. It is the list of the countries.
3. I couldn't understand the reason.
4. Our destination of the school trip is Nagasaki.
5. The great earthquake occurred early in the morning.
(d) when most people were asleep
(e) where the atomic bomb was dropped
(a) where they conducted the survey
(b) when I can do volunteer work
(c) why he had kept me waiting for two hours