Here you are at last! What kept you so long—Sorry, I’m late. But do you know what greatdifficulty I have ______ your house.

Jane, can you play _______ baseball—No, I can’t. But I can play _______ violin.

Has your father stopped smoking- Not yet. It’s quite hard for him to

－Howmany women teachers are there in your school－_____of the teachers _____ women

Have you finished the work?—Not yet. I _______ to do it just a moment ago.