选择合适的关联词填空。

不但……还……　　因为……所以……　　如果……就……　　一……就……

1．帝国主义者提出一个条件：清政府（　　）用本国的工程师来修筑铁路，他们（　　）不再过问。

2．詹天佑总是想：如果不把这条铁路修好，（　　）惹外国人讥笑，（　　）会使中国的工程师失掉信心。

3．（　　）想到生身母亲和祖国母亲，我（　　）心潮腾涌。

4．（　　）她的儿子今天回家，从学校回来，（　　）她高兴得不得了。

根据句意、中文提示写出单词，完成句子。(15分)

小题1:Can you spend some time              (解释)the project to us in detail?

小题2:You can ask Tom for help when you have difficulty making a         (决定)．

小题3:If you want your dog to be happy．You should           (匀出)at least half an hour to play with it every day．

小题4:Can you see any            (蝴蝶)among the flowers?

小题5:Our teachers are very good．They always make their classes        (活泼的)and interesting．

小题6:Jack is very busy．Has he          (回答)to your last e-mail?

小题7:Our English teacher often            (划分)us into groups of four to organize class activities．

小题8:—Who __________(发现)America?  —Columbus．

小题9:What an          (patient)boy Eric is ! He only waited for ten minutes and he was very angry．

小题10:Millie is always             (satisfy) with a small success．

小题11:It’s not good for you to stay alone sadly．You need someone to share your____(happy)．

小题12: Kitty doesn’t know what to do next, so she has no       (choose)but to call her friend, Lily for help．

小题13:I don’t think their suggestions are            (value)to us．

小题14:Don’t keep your worries to         (you) , Jim and Tom．

小题15:The project was finished          (success) on time by them．