— We did not see him at the lecture yesterday. — You _______ him, since I went to an international conference with him.
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.