1£®The country's present difficulties arise __from__ the reduced value of its money.

2£®Please concentrate your attention __on/upon__ the business on hand and don't drag in irrelevant issues.

3£®These shoes are not suitable __for__ walking in the countryside.

4£®If what you say is not consistent __with__ what you do, it will have a bad effect on your children.

5£®They need more troops to defend the border __against/from__ possible attack.

6£®I changed my approach to __learning__(learn) English this term and did a good job in the final examination.

7£®She blamed the failure of their marriage __on__ him.

8£®Most of them were in favour __of__ my opinion while David was against it.

9£®They started out early to make certain of __getting__(get) there on time.

10£®The boy pretended __to be studying__(study) hard when his aunt dropped in, but in fact he was thinking about something else.

11£®He is used __to__ visiting his parents every week.

12£®The __employer__(employ) wasn't satisfied with the young applicant's answer.