Shelly had prepared carefully for herEnglish examination so that she could be sure of passing it on her first________.

I wonder if you could go with me to the supermarket.— Don’t disturb me. I ________ my daily report this morning and haven’t finished yet.

Susan has bought a large house with a swimming pool.—It ______ be very expensive. I never even dream about it.

I like music. I want _________ the music club.

15. — Who are the teenagers gathering at the school gate? — Well, if you _____ know, they are all my visiting students.