How to say “There's no doubt what he decided on his own caused trouble later.” in Japanese

あれは何ですか？　灰皿です。

• say “What is that? It...” in Japanese

僕はいつかアメリカに行くぞ。

• say “I will go to Ameri...” in Japanese

先に進めよう。

• say “Let's move on.” in Japanese

パスポートと航空券を忘れずに。

• say “Don't forget your...” in Japanese

彼が抱いていた不安は取り越し苦労だったようだね。

• say “It seems the anxie...” in Japanese

ついでに私の分も買ってくれる？

• say “While you're at it...” in Japanese

あの少年たちは誰の生徒ですか？

• say “Whose students are...” in Japanese

両替してもらえますか？

• say “Can you break this...” in Japanese

この教科書は来年も使える。

• say “You can use this t...” in Japanese

病院で二時間も待たされた。

• say “I was kept waiting...” in Japanese

認識のずれが後で響いてくる。

• say “A gap in understan...” in Japanese

明日は雪の予報だよ。

• say “Snow is forecast f...” in Japanese