If you keep on your research, you will succeed _____.

There is great chance that the patient suffering from cancer____ survive with medical advances.

ted as ____chairman to China, Mr. Xi was determined to serve his country____ heart and soul.

I don’t mind___________ the window. It’s windy and cold outside.

Is it for two months ________ they have stayed here?— NoIt’s only three weeks ________ they arrived here