---Who is to give us the lecture today? ---The lady _____ our headmaster into the hall.
When I came back from shopping, I found my purse __________.
Mr. Smith, may I have a word with you? I’ll try not to __________ too much of your time.
You may catch up with others __________ you work a little harder.
Without electricity human life __________ quite different today.
Gunpowder is generally believed __________ in ancient China.