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______ he did not want to, he still had to share his hotel room with a stranger.

Walk down our street any day _______ you will see kids playing football.

The reason why I burst into tears is _________ I don’t want to part with my mother.　　　　　　

________one scientist has pointed out, children’s skulls are not fully developed.

It would be unfair to clone any extinct animals       they were to live in a zoo.

Cloning plants is straightforward           cloning animals is very complicated .

The popularity of films such as Jurassic Park,       a scientist clones several kinds of extinct dinosaurs, proves how the idea struck a mixture of fear and excitement into people’s hearts.

It’s the same in China—many people, some ______ are not overweight at all, are always going
on diets or taking weight-loss pills, ______ are often dangerous.

The road is covered with ice. I can’t understand         they insist on going by bike.

She will fly to Washington, ________ she can enjoy herself.