Willie has complained to the sales manager about the PC he bought _______ screen exploded     for no reason.

The activities organized by our school really gave us a platform ____ we learned team spirit.

The place _______ the bridge is supposed to be built should be _______ the cross-river traffic is the heaviest.

This is the small house less than 15 square meters, under _________ roof lives a large family of three generations.

When you read the book, you’d better make a mark ____ you have any questions.

Steve Paul Jobs passed away in America on October 6th, 2001, _____ death made millions of people feel sorrowful.

Do you have any idea of how many gold medals China won in the 16th Asian Games, ______ was hosted in Guangzhou?

The new CRH train between Beijing and Shanghai _______ speed once reached about 350km/h has had a 50 kph speed cut to 300 kph.

After the big earthquake in Chile, there were about 300 aftershocks in the nearby area, ______ over 200 were quite damaging.

There was _____ I cared about how others may see me. Now I know how silly I was.