41.You will surely succeed in passing CET-4, ____ you work hard at your English.

　　A)so long as

　　B)in case

　　C)in that

　　D)as soon as

　　42.The whole journey ____ a full week by the time it ends in France.

　　A)will have lasted

　　B)would last

　　C)has lasted

　　D)must have lasted

　　43.Autumn now approaching, the peasants are ____.

　　A)at busiest

　　B)at their busiest

　　C)on busiest

　　D)on their busiest

　　44.She is fully occupied everyday with ____.

　　A)her not intelligent son

　　B)her not very intelligent son

　　C)the not intelligent son of her

　　D)the not intelligent son of hers

　　45.Not until ____ to go on strike.

　　A)all the demands has been turned down the workers decided

　　B)had all the demands been turned down the workers decided

　　C)all the demands had been turned down did the workers decide

　　D)had all the demands been turned down did the workers decide

　　46.As heir ____ his parent's property, he will get 8 million dollars.

　　A)on

　　B)by

　　C)to

　　D)at

　　47.The ____ of the meal were thrown away.

　　A)remainder

　　B)rest

　　C)ruins

　　D)remains

　　48.The best student in each class will ____ a prize at the end of term.

　　A)award

　　B)possess

　　C)reward

　　D)receive

　　49.Great efforts to increase wheat production must be made if bread shortages ____ avoided.

　　A)will be

　　B)are to be

　　C)can be

　　D)were to be

　　50.There are more than 50 proposals ____ at the conference.

　　A)to discuss

　　B)to be discussed

　　C)discussing

　　D)having been discussed