eople have been ill with a strange disease these days,____we’d never heard of before

Mom’s gift? She _____ have chosen a better one for me.—She must be very happy to know it.[ ]

Not everyone knows_____they want to be.

Look, _______ is dancing under the big tree.—Oh, that’s my cousin, Cindy.

This history book is of great value.— Exactly. _____ can be enjoyed from it ______ you have a deep understanding of it, however.