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Unit 8. Past Modal Verbs of Obligation
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What did the ancient Chinese _________ do to invent printing?
have to
had to
had
have
Oops!
Okay!
They ________ trade the things they needed.
have had
have to
had to
had
Oops!
Okay!
The Incas had to _______ careful when they crossed bridges.
be
been
was
none
Oops!
Okay!
The ancient Chinese army _________ use kites to signal.
have
have to
had to
had
Oops!
Okay!
The Incas didn't write, so they _______ develop other ways to communicate.
have to
have
had
had to
Oops!
Okay!
They ___________ learn lots of different languages.
didn't have to
don't have to
hadn't had to
didn't had to
Oops!
Okay!
Did the Incas ________ build bridges out of stones?
have to
had
have
had to
Oops!
Okay!
The ancient Romans had ____ invent central heating because it was very cold.
have to
had to
to
none
Oops!
Okay!
The Incas ___________ carry water.
didn't have to
hadn't have to
haven't have to
didn't had to
Oops!
Okay!
____ the Incas _______ develop technology to improve their lives?
Do - have to
Do - had to
Did - had to
Did - have to
Oops!
Okay!
What ____ they ___________ do when they needed new things?
did - have to
do - have to
had - have to
did - had to
Oops!
Okay!
They used lamas and donkeys so they _________ carry heavy objects.
hadn't had to
don't have to
didn't have to
didn't have to
Oops!
Okay!
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