—It’s smoggy these days. That’s terrible!—Yes, I hope to plant trees. ______ trees, ______air pollution.
Tony is not as clever as Lucy, but he works______ than her.
The house ______ I live in is very small.
He ______ a chance to try it again just now.
We _______ many roses in the garden since last year.
Smoking ______ in the kitchen in my house.