At last they got the letter they____________．

I don’t think I can understand this book. The subject it deals with is not familiar ______ me.

Life isn’t meant to be easy and you have to _______ some pain to 1earn the skills to move forward.

Many approaches have been _______ to control the spread of H7N9 Bird Flu.

The adoption of orphans and physically challenged children has been a subject of public
debate _____ a fire in an unregistered orphanage last month.

What an _______day ! After a whole day’s hiking, I am completely ________.

You’d better set a ­­­­­______ at the beginning of the new term, and then try your best to achieve it.

The wet weather will continue tomorrow, when a cold front________ to arrive.

Don’t blame them any more-this is         because they are still young and lack experience.