die；politely；check out；fair；quarter；yours；clear out

（1）My bike is broken.May I use 　 　？

（2）Nearly three 　 　 of the earth's surface is covered by water.

（3）I took lots of photos yesterday just to 　 　 the new camera.

（4）We Chinese feel sad that Dr.Wu Mengchao 　 　 in May，2021.

（5）When you visit a foreign country，it is important to know how to ask for help 　   　.