1 . It is careless of me _______ (lose) my umbrella. (所给词的适当形式填空)

2 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Global warming is pushing the number of polar bears to     1     (it) limit. According to a new study, they could have fewer than 100 years left before     2     (extinct).

Polar bears live     3     hunting seals in the Arctic Ocean, but as ice melts in that region, their habitat continues to shrink. Amounts measured at the end of the 1970s show sea ice that lasts for more than a year in the Arctic has decreased at a rate of 13% per decade.

Studies show that     4     (decline) sea ice will lead to a reduction in polar bears. They will be unable to bear the effects of climate change over the next several decades. The scientists believe polar bears will be     5     (thorough) wiped out by 2100.

“What we’ve shown     6     (be) that, first, we’ll lose the survival of bear cubs (幼熊). Although cubs will be born, the female bears won’t have enough body fat to produce milk     7     (bring) them along through the ice-free season,” said Dr. Steven Amstrup, chief scientist of Polar Bears International, to the BBC.

The study estimates that, even in a situation     8     countries achieve a moderate (适度的) reduction in greenhouse gases, several     9     (population) of polar bears will disappear. But Amstrup said, “We can make     10     difference if we have an urge to keep climate change little.”

3 . James said, “I took the book home with me.”
→James said that he ____________ (take) the book home with him. (所给词的适当形式填空)

4 . These chemicals led to severe water quality issues, ___________ (cause) a decrease in the number of fish species. (所给词的适当形式填空)

5 . The government________(launch) an advertising campaign to encourage to vote so far.

6 . If you are ______ (satisfy) with this product, please return it. (用所给词的适当形式填空)

7 . With his thumb up, he expressed his thanks to me ______(repeat). (用所给词的适当形式填空)

8 . Tom is upset _______ our forgetting his birthday. （用适当的词填空）

9 . The three astronauts ________ board, including a female, will spend two months in space.(用适当的词填空)

10 . The royal family ____________(consist) of the king and queen and their relations.