Nick a job in a bank, but to our surprise, he didn’t take it.

Do you know who can write ______ in your class

So difficult __________ it to adapt to the academic requirements of a Western university that I determined to take a preparation course.

We have done a lot to make our city cleaner, but it’s still not enough.– So we should do ________ to improve it.

The book, ________ to tell people how to learn English as ________ second language, is very helpful for beginners.