The words which can be best used to complete the sentence below are:
- Astrid forgot to bring her coat. She looked cold when she entered the lecture hall
The word that can best complete the given sentence is "looked".
This is because, based on the rules of concord, the event "forgot" is in the past tense, so the following sentence about how she felt should also be in past tense.
With this in mind, we know that the other options are incorrect because they are not in past tense, rather they are in:
- Present continuous tense
- Present perfect tense
- Past perfect tense
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