. It is none of your business ______ other people think about you. Believe in yourself.
A. howB. whatC. which D. when
This advertisement is a/an______ example of their marketing strategy
A. average B. specific C. typical D. flexible
We must soon ______a new teacher to the class.
A. adapt B. appoint C. exchange D. abuse
The tourists, had enjoyed themselves so much in the botanic garden, were worn out
A. all of what B. all of which C. all of them D. all of whom
We can hardly believe such a young boy ______ travel around the world all by himself.
A. may B. need C. should D. must
My friend Jack was the first person I knew ______an iPhone 5S.
A. using B. to use C. used D. having used
