PLZ help me check my answers! Thanks very much!

Here is the paragraph:
The basic function of money is the enable buying to be separated from selling, thus permitting trade to take place without the so called double coincidence of barter. If a person has something to sell and wants something else _1__ return, it is not necessary to search for someone able and __2__ to make the desired exchange of items. The person can sell the _3_ item for general purchasing power-that is ,"money"-to anyone who wants to buy it and then use the proceeds to buy the desired item from anyone who wants to sell it.
The importance of this function of money is 4__ illustrated by the experience of Germany just after World War II, _5___ paper money was ___6_largely useless because, despite inflationary condition, price controls are effectively _7____by the American, French, and British armies of occupation. People had to __8__to barter or to inefficient money substitutes. The result was to cut total output of the economy in half. The German "economic miracle" just after 1948 reflected partly a currency reform by the occupation authorities, _ 9___some economists hold that is stemmed primarily from the German government's __10__ of all price controls, ___11_ permitting a money economy to _12___a barter economy.
___13_of the act of sale from the act of purchase _14____the existence of something that will be generally accepted in payment-this is the "_15__of exchange" function of money. But there must also be something that can serve as a __16__abode of purchasing power, in which the seller holds the proceeds in the interim __17__the first sale and the _18___purchase, or from which the buyer can __19__the general purchasing power with which to pay __20___what is bought. This is the "asset" function of money.
1 A. On B. In C. By D. For
2 A Capable B. likely C. desirable D. willing
3 A Excess B. extra C. surplus D. ample
4 A Dramatically B. urgently C. faithfully D. incidentally
5 A.When B. before C. since D. until
6 A. Developed B. reserved C. rendered D. imagined
7 A .Encouraged B. enlarged C. endured D. enforced
8 A. Conform B. resort C. commit D. gear
9 A. And B. but C. therefore D. however
10 A .Deprivation B. stimulation C. elimination D. restriction
11 A. Thereby B. therefore C. then D. while
12 A. Alternate B. establish C. substitute D. replace
13 A. Introduction B. specification C. representation D. separation
14 A. Assumes B. requires C. focuses D. undertakes
15 A. Medium B. function C. role D. nature
16 A. Fashionable B. favorable C. temporary D. token
17 A. Both B. for C. between D. after
18 A. Consequent B. relevant C. inadequate D. subsequent
19 A. Execute B. extract C. exceed D. exchange
20 A. For B. off 1 C. back D. in


My answers are : BDBCA CDBDD ADDBA ACCDD
I hope someone could help me check my answers. Thanks very much!