—Why，Jack，you look so tired!—Well，I ________ the house and I must finish the work tomorrow.

The final examination is coming up soon. It’s time for us to ________ our studies. 

—Why did you come by bus?---My car broke down yesterday evening and I ____ it repaired.

With the rapid growth of population, the city _____ in all directions in the past five years. 

Because of the bad weather, my mother ____ and lay in bed. She ______ for a week.