After school we went to the reading-room to do some reading, only to be told that it.
.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.