He is writing a letter______ a pen that I have never seen before.
You _____ return my dictionary now. You can keep it and I will get it from you later.
It was at the end of the meeting _____ Mr. Smith made the decision.
English _____ all around the world.
Middle school students can _____ a lot from the Chinese-Engli sh dictionary.
You will be late for school _____ you don’t hurry.