一Kurt stayed up for three days preparing for the exam and finally fell ill.一So .I dare say if you overworked for several days in a row.
China always plays ____ active part in fighting against _____natural disasters.
It’s ______ difficult to draw the boy’s attention to his lesson.
It was just a week ago________ an earthquake happened in Taiwan.
He is a well-known singer, but he is ______an actor.
The prize will go to the writer ________ story is most meaningful.