Though his parents agreed_____ his views, they didn’t_______ him to go there alone.

As is known to all, Montreal is the second largest French-speaking city in the world, _____.

With the entrance examination _____ up, our classmates work harder and harder.

All the cloned animals have so far suffered from some serious disorders, many of        dying soon after birth．

 With the police _______ the traffic, we could get back home safely in such bad weather.