问题补充:
单选题Heearnedenoughmoneytostarthisownbusiness_____offeringguideservices_____tourists.A.by; toB.with; atC.on; forD.through; with
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。