He's lived in China for five years now so he _______ Chinese fluently.
-
could speaks
-
can speak
-
could spoke
-
can speaks
B
Correct answer
Explanation
After modal verbs like 'can', use the base form of the main verb without -s or -ed endings. 'Can speak' is grammatically correct. 'Could speaks' and 'can speaks' are wrong because they add -s after a modal. 'Could spoke' is wrong because 'spoke' is past tense, not base form. Present context ('now' in the sentence) makes 'can' more appropriate than 'could'.