由于爆竹(firecrackers)带来的种种危害，人们认为应该禁止燃放爆竹。

As firecrackers have bad effects, people think setting off firecrackers should be banned．

(用considering改造一下该句)

________, people think setting off firecrackers should be banned．

________ the question, they went home．

The question ________, they went home．

A．settling　B．settled　C．Having settled　D．has been settled

He looked at the pile of ruins that once was the school, ________(feel)hopeless．

As he looked at the pile of ruins that once was the school, he felt hopeless．

________(look)at the pile of ruins that once was the school, he felt hopeless．

请注意观察下面第一个句子中的分词和第二个句子中的从句的不同表达方式。

“Mommy, look!”Cried my daughter, Darla, ________(point)to a hawk ________(soar)through the air．

“Mommy, look!”Cried my daughter, Darla, who ________(point)to a hawk which ________(soar)through the air．

请注意观察下面第一个句子中的分词和第二个句子中的从句的不同表达方式。

As he was digging, other helpless parents arrived, clutching their hearts, ________(say),“My son!”

As he was digging, other helpless parents arrived, clutching their hearts, and ________(say),“My son!”

请注意观察下面第一个句子中的分词和第二个句子中的从句的不同表达方式。

________(remember)his son's classroom would be in the back right corner of the building, he rushed there and started digging through the ruins．

When he ________(remember)his son's classroom would be in the back right corner of the building, he rushed there and started digging through the ruins．

请注意观察下面第一个句子中的分词和第二个句子中的从句的不同表达方式。

…an earthquake almost flattened America, ________(kill)over 30,000 people…

…an earthquake almost flattened America, which ________(kill)over 30,000 people…

1．The two students ________ their arguing when their teacher came into the classroom．

2．The police ________ the fight among the two black gangs．

3．My car ________ on the way home．So I have to ask someone for help．

4．Do you know how their marriage ________?

A．broke up　B．broke down　C．broke off　D．broke away

根据句子的意思，用take pains的适当形式填空。

The research they did was ________．