简述土壤污染的来源及各种污染物污染土壤的方式。

“If”he added, “________ enough time, we would certainly have done it better.”

A. given

B. to be given

C. give

D. giving

With a little more patience, you () the job better.

A、could do

B、would do

C、could have done

D、must have done

______more time, she would certainly have done it much better.

A．Given

B．To be given

C．Giving

D．To give

______ better equipment, we could have done it better.

A．With

B．Without

C．But for

D．Were it not for

______more time, she would certainly have done it much better.

A．Given

B．To be given

C．Giving

D．To give

(Give) ______ more time and money, he could have done better than what it is.

If we ______ more time and money, we could have visited many more places.

A．have

B．had had

C．have had

D．could have

听力原文：Should I have the article finished today or could I have more time？

(A) He needs to be done by tomorrow.

(B) We gave it to the writer.

(C) I will ask the director for an extension.

(35)

A．

B．

C．

______more time, we could have finished the mission very well.

A．Having given

B．Give

C．Given

D．To give