Either he or I ______to the airport.

—Which foreign language are you better at, English or French?—I am sorry I know _______of English and _______of French.

When I was a child I used ______ swimming in the lake.

22．1 used to love this film when I was young，but I _________ it that way any more．

I always regretted not_________ harder when l was young．

—Do you learn Russian or French?—I learn _____.

—Do you learn Russian or French?—I learn ______.

Virginius would feel more or less guilty when he______.

Virginius would feel more or less guilty when he _____.

Believe it or not, when first (introduce) ____ to Europe, tomato was thought to be poisonous.

I remembered the day when World War II finished I was eight or nine at the time , and we heard it ___ when we were at the table

I remembered the day when World War II finished I was eight or nine at the time , and we heard it ___ when we were at the table