In the 19th century, people mainly _______ letters to keep ...

[ Tenses ]

In the 19th century, people mainly _______ letters to keep in touch.

A. used

B. has used

C. is using

D. will use

Select your answer:

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Have you finished … the kitchen?

A. to clean

B. clean

C. cleaning

D. to cleaning

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Fifi will be extremely happy on her birthday.

The subject is _________________.

A. Fifi
B. Extremely
C. Happy
D. Birthday
E. None of the above