1、Although he hasn't any formal qualifications, Betas _____ to do well for himself.

　　A.managed　　B.succeeded　　C.arranged　　D.convinced

　　2、The family is a cooperative enterprise for which it is difficult to _____ rules, because each family needs to work out its own ways to deal with its own problems.

　　A.set up　　B.put down　　C.keep up　　D.lay down

　　3、After a short holiday, he _____ himself once more to his studies.

　　A.applied　　B.converted　　C.engaged　　D.exerted

　参考答案：

　　1、A　2、D　3、A