How are you getting along with your project? — I was about to give up when an idea occurred tome ____ I could work with my roommate Tim. [ ]

The houses for the low-income fnext year。

We __________ obey the traffic rules.

_______ the extreme levels of air pollution, city authorities have started to take measures to quickly reduce pollution levels and protect city dwellers.

Fans all over the country are talking about _____ this football team has never won any match and _____ to do with it.