英文语法求解

英文语法求解
22.He walked ____ whole day,but by 5:30 he had only covered ____ quarter of the
distance.
A.the; a B.a; the C.the; the D.a; a
23.I had worn out two pairs of boots on the walking tour.I needed ____ one.
A.third B.the third C.a third D.a second
24.The use of the school education is not so much to teach things ____ to teach the art of learning.
A.than B.as C.not D.rather than
25.Why is the rubbish still here?It ought to ____ away yesterday.
A.be thrown B.have thrown C.throw D.have been thrown
26.He still does not know what____ while he was away from home.
A.would happen B.happened C.had happened D.happens
27.The manager insisted that the chief engineer ____ testing the new model immediately..
A.start B.starts C.started D.had started
28.Jane avoided ____ any unnecessary information to the new schoolmaster..
A.being given B.give C.to give D.giving
29.____ what the situation would be like,they decided to keep silent.
A.Having not known B.Knowing not
C.Not knowing D.Not know
30.I visited Qingdao this spring.Never in my life ____ so beautiful a place.
A.I had been B.did I see C.had I seen D.I shall see
麻烦给出答案,感激不尽~