He earned enough money to start his own business _____ offering guide services _
题型：不详难度：来源：
He earned enough money to start his own business _____ offering guide services _____ tourists.| A．by; to | B．with; at | | C．on; for | D．through; with |
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答案
| A |
解析
| 介词by可以表示手段、原因，常置于动名词前，如：You can make the cake by mixing eggs and flour. 其次考查介词与动词offer的搭配，offer sth. to sb. =" give" sth. to sb.其中的to表示对象。 |
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