[ Grammar ]
To be effective, communication must also include ____________ , also known as a return message.
A. sender
B. receiver
C. message
D. feedback

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Vocabulary and Grammar › ViewWhich word means “to learn where something is”?
A. leave
B. like
C. call
D. find
Mixed General Quiz › View
Also, ___ Memorial da America Latina, a huge cultural space designed by the Brazilian architect Oscar Niemayer to promote Latin American cultural integration.
a. not miss
b. don’t miss
c. can’t miss
d. shouldn’t miss
When I was a child, I ……….the violin.
A. was playing
B. am playing
C. played
D. play
Present Tenses › View
I ……………….. for the manager for two hours.
A. am waiting
B. wait
C. has waited
D. have waited
