It is very common that former people have difficulty in  _____ modern life.

I really don’t know ___ ___I kept the secret papers.

---Why do you look so upset?

---There are so many troublesome problems ____.

It didn’t _____ him that she would refuse his invitation

The seawater takes ____ a lot of heat in summer.

That was the first time I _______ there and I was impressed by the friendly people very much.

 Jane has been so _______ in getting used to everything that she hasn’t had time for social activities.

To qualify yourself for this kind of new job, I recommend that you _____ some online courses.

You can easily find the line, which is _______ with an arrow.

---What attracts people to California is its pleasant climate and relaxed lifestyle.

---This is ____ each year a great number of people from all over the world try to ____ to California.