Often, when he ______ something that ______ him, he wasted his time drawing some little pictures. 

When he was there, he ____ go to that coffee shop at he street corner after work every day.

More and more people have come to realize that if we had taken effective measures much earlier, the air quality ______ so seriously now. 

It was Mr Zhang that helped us out of the trouble. Without his help, we ______ it so easily.

“He will take you as well.” “But I’d rather he ______.”