It can’t be Lucy’s bike. Look! ______ is under the tree.
_____ news! Our class will go to Beijing for a _____ visit this spring.
Mr. Wu found that a number of UFOs in the sky ______ in a very short time in surprise.
―Did you see Mr. Li when you were in France?―No, when I ______, he ______ to Canada.
Look! The reporters are covering these lively actresses’ wonderful performance_______.
While I_______ a detective story, someone_______ at the door.