— Is it for two months ________ they have stayed here?— No. It’s only three weeks ________ they arrived here.
10. When she heard that I couldn’t help _____ the problem, the poor girl couldn’t help ____.
9. ______, President Obama is the most powerful in the world.
8. To get the project started, _____ they need is some money.
7. Nobody believed his reason for being absent from his class _____ he had to meet his uncle at the airport.
6. I like _____ in the autumn when the weather is clear and bright.