e of air pollution being greatlyreduced, this city is still ______

You are late again, Tom? — Sorry, but I got ________ a heavy traffic jam.

The team are working hard to ___ the problem so that they can find the best solution.

We don’t permit________in our school.Would you please put your cigarette out?—Forgive me. I didn’t know.[ ]

It was today’s activity ________ let me know the importance of teamwork.