Super brain is a hit TV show recently． Which competitor do you like best？
I think Zhao Jinhao is one of ____ _competitors among them．（ ）
A．smartB．smarter
C．smartestD．the smartest
Anita spoke _________ quietly that I could hardly hear her．（ ）
A．tooB．suchC．soD．very
When you are home，give me a call to let me know you __________ safely．（ ）
A．arrivedB．have arrived
C．will arriveD．are arriving
My cousin works for an airline．He flies planes．He is __________．（ ）
A．an inventorB．a scientist
C．an explorerD．a pilot
If someone is in your way，you should say" ___________"and be polite enough to wait till he or she moves．（ ）
A．excuse meB．I'm sorryC．thank youD．never mind
Is your friend British or American？
__________．She is Canadian．（ ）
A．BothB．EitherC．NeitherD．None