It’s easy enough ______ out this problem. You needn’t go to the teacher.

After many years of hard work，the man has finally reached the stage________he has gained good fortune and social status.

I did not give offence to you ___________.—Forget it. Let’s make up.

______ the kids have left home , we’ve got a lot of extra space.

I don’t know if she___________. If she __________, please let me know.