---Why did Suzy look so stressed when we saw her?---Because she wondered________.
—What do you often do ________ classes to relax?—Listen to music or walk around the school.A.overB.throughC.between
—How do you go home every day?—________ bike.It’s not far from here.
—Can you tell me ________ to travel to Dalian?—About two hours by plane.
It took Janet three hours ________ reading this interesting story.A.to finishB.finishedC.finishing
—How many teachers are there in your school?—About four ________.A.hundreds ofB.hundredC.hundreds