-There a dolphin show in the zoo tomorrow . -Great ! Let's go to see it together.
He is an explorer ________ a sailor.
________ our surprise, he failed the math exam.
He ________ an English club last year and has improved his English a lot.
—What a heavy rain!—So it is.I prefer ________ rather than ________ on such a rainy day.
By the time I locked the door, I realized I ________ my keys at home.