Dependent prepositions

I’m really tired (a)   listening to my sister. She complains about her boyfriend all the time.

Katy’s worried (a)   her end-of-year exams. She thinks she’s going to fail.

The waiter was so rude (a)   us that we didn’t leave a tip.

They’re not very pleased (a)   their new car. It’s broken down three times in one month!

My mum’s been married (a)   my stepfather for 20 years.

Are you excited (a)   moving house next year?

That man over there reminds me (a)   my first teacher.

I'd like to go with you on holiday, but it depends (a)   how much it will cost.

Recent research shows that drinking mango juice is good (a)   your immune system.

You’ll have to choose (a)   this one and that one. You can’t have both.