Do you like to buy the product an advertisement ______ on TV?—Not really.I think it’s better to look before we leap.
While the thief was searching in the room, the door_____.
Tom ‘ s brother _____ me _____ Tom just now.
What about the student in your class, Mr. Wang—The doctor said that ________ sleep caused him poormemory and poor concentration.
have youworked in the factory–For 5 years.