I don’t know why you are so concerned —it’s not your problem _____ .

She always does very well in the English exams. Butshe can _____ understand English radio programs.

I don’t like the way ________ he congratulated us ________ getting married.[ ]

It’s no use with your younger sister because she is a child.[ ]

Peter has ______ cough and he has to get ______ X-ray.