--Wow, ____useful and fashionable iphone5s you have bought!
---Yes, it is ____ great help to me, ____ I must say it also cost me a lot.
| A．what, a, but | B．what an, the, And |
| C．What a, a , And | D．How, a , But |
The librarian(图书管理员) warned me _____ the books in two weeks.
| A．return | B．to return | C．returned | D．returning |
One night, Hou Yi found that the moon was ____ bright and round _____ he could see his wife there.
| A．so; that | B．too; to | C．such; that | D．enough; to |
I was afraid ______ mistakes.
| A．to made | B． of make | C．to make | D．of made |
_______ English programs is a good way to learn English.
| A．to watch | B．Watching | C．watch | D．Looking |
They find ___ difficult to understand the teacher when they talks.
| A．this | B．that | C．her | D．it |