谁能帮我讲解一下完形填空?

谁能帮我讲解一下完形填空?
There is a holiday next week and I can’t decide what to do． I have a lot of
work to do 26 and this would be a good chance（机会）27 ． But I don’t like 28 the
holiday in such a way． I can work at home all the rest of the year． Last year I
went 29 to the mountains．30 there was beautiful,but it is too cold this time of
a year． And it’s really 31 far to go for a short holiday． I decide 32 this
isn’t a good time to 33 the mountains． But I 34 to go somewhere else．
Perhaps this would be a good chance to go to the beach（海滨）．I like to go for
walks 35 the seashore 36 the warm sunshine and watch the water． It’s only eight
miles away and I could get there 37 about two hours． After thinking it 38 ,I am
sure that this is a 39 time for the seashore than 40．
Oh,here is a letter 41 Jim． He 42 he is going to his house in the mountains
for the 43,and he 44 me to go with him．45 giving it some more thought,I wrote
back to Jim and thanked him for that．
A 26.A.at home B.at house C.in school D.in factory
C 27.A.do it B.doing that C.to do it D.with that
B 28.A.to take B.to spend C.having D.asking
C 29.A.the north B.for north C.north D.to north
B 30.A.Nothing B.Everything C.Somebody D.Anything
D 31.A.very B.enough C.rather D.too
A 32.A.that B.what C.whether D.when
B 33.A.go B.go to C.go for D.leave
A 34.A.do want B.wanted C.shall want D.was wanting
D 35.A.on B.by C.beside D.along
C 36.A.on B.during C.in D.under
A 37.A.in B.for C.with D.after
C 38.A.about B.of C.over D.on
C 39.A.good B.fine C.better D.best
B 40.A.home B.the mountains C.big cities D.country villages
C 41.A.for B.to C.from D.by
A 42.A.says B.tells C.speaks D.talks
B 43.A.weekend B.holiday C.sunday D.trip
D 44.A.want B.wish C.hopes D.asks
C 45.A.When B.With C.Without D.As