完成句子。

防止犯罪是警察的职责。

It is the job of the police to ________　________．

完成句子。

All flights into London Heathrow have been delayed ________　________(由于)the thick fog．

完成句子。

“I owe ________　________　________　________　________(我非常感激我的父母)”，he admitted．

完成句子。

He ________　________　________　________　________(把成功归功于运气)more than ability．

完成句子。

When I asked him ________　________　________　________　________　________(付给我他欠的帐)，he got angry．

完成句子。

Strawberries are ________　________　________(短缺)at the moment．

完成句子。

When money is ________　________　________(短缺)many businesses fail．

完成句子。

At the beginning of term, students ________　________　________(被供给)a list of books that they are expected to read．

完成句子。

Three people have been arrested for ________　________　________　________　________(向恐怖分子提供武器)．

请用本单元所学短语的适当形式填空。

The government must ________　________(采取措施)to get the price of houses under control．