When you go back home, please ring me up to let me know you safely.
AIDS is said the biggest health to people in that area over the past few years.
With a lot of problems ________, the newly – elected headmaster is having a hard time.
Soon after getting off his horse, the man appeared at the second storey windows, __he could see nothing but trees.
Tom was very angry about ________ to Mary’s birthday party.
You can come here to ask me _____ if you have any questions.