ex. I found my book stolen.
(練習) I found my watch _ _ _ _ _ _ _. ( lose、lost、losing )
Sorry, I keep you waiting.
(練習) Exercises keep our body _ _ _ _ _ _ _. 運動使我們身體健康。
Do you consider math hard ?
(練習) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. 你認為英文容易嗎?