你好戚芦, 以下是你要的正确答案:I found it hard to put _my__ heart into study.我发现很难慧败投入到学习中去.I’m glad I made a _choice_(choose)我很高兴我作出了一个选择.we extended a warm welcome to their coming___(come) to our city我们对他们到高碧带我们的城市表达了热情的欢迎.I _seriously__(serious) wish I would be able to learm from president and Mrs.johnson about the secret of having a happy and enduring marriage.我真诚好希望我能从主席和JOHNSON夫人那里知道一个幸福和持久的婚姻的秘密.