---- Susan, go and join your sister cleaning the yard.  ---- Why ____? John is sitting there doing nothing.

—Hi, what’s wrong with the girl from Japan?    —Oh, she feels lonely, she has ________friends in China.

Even if they are on sale, these computers are equal in price to, if not more expensive than, ________ at the other store.

There came a point in his life____ he had to think about seriously about his future.

The woman couldn’t see her son____.She was worried.