Multiple Choice
The first sentence in each set contains a two-part verb (to have and a past participle) . The second sentence contains a fixed-form helping verb and a blank. Select the correct form of the main verb for the second sentence.
-Ellen has practiced flips for hours. Ellen could ___________________ flips for hours.
A) practice
B) practices
C) practiced
Correct Answer:

Verified
Correct Answer:
Verified
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