the matter with you—Afterthe long walk, my legs ______ and I couldn’tgo any further.

Many people agree that _________ knowledge of Englishis a must in _________ international trade today.

Rather than _______in the city, the old man would prefer______in the countryside

It was not until the end of last year _____ the economy in our country began to develop rapidly.

This accident was______ his driving.