Japan’s economy _______ in the past twentyyears. No one knows how long it ______ before it regains its increase.

This is _______ English class. I hope you can enjoy English.

It is in the west of China _____ there is no doubt _____it is going to rain tomorrow.

Some scientists believe that ________ is no doubt ________ a cure for AIDS will be found.

Could you please tell me what happened _____? — OkayI know you are really pressed for time right now[ ]