Standard English ConventionsEasy–MediumBase form after 'able to'
Standard English Conventions practice question
The new analyst was able to ____ the code within an hour.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A. crackCorrect
- B. cracked
- C. cracking
- D. cracks
Answer: A. crack
After 'able to', the verb takes its base form: 'able to crack'.
Why the other answers are wrong
- B. cracked
- 'able to cracked' puts a past form after 'to'.
- C. cracking
- 'able to cracking' is not a standard form.
- D. cracks
- 'able to cracks' adds an -s the infinitive doesn't take.
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Which choice completes the text so that it conforms to the conventions of Standard English?
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