A. Choose a or b.
1. I can't see you. Turn on your _____.
a. printer. b. webcam
2. Marco Polo was a famous ______ and he traveled to many places around the world.
a. achievement
b. explorer
3. Marie Curie, the famous scientist, was born in 1867 and ______ in 1934.
a. died
b. discovered
4. That _____ looks very nice on you.
a. device
b. outfit
5. I went to the store last week to buy a new _____ for My computer.
a. system
b. keyboard
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