My son . . . . . . . . very well at university this term because he . . . . . . . . out late at night anymore.

Solution (By Examveda Team)

The sentence "My son _________ very well at university this term because he _________ out late at night anymore." requires a combination of present and past tenses to express the idea that the son's good performance at university is influenced by the fact that he no longer stays out late at night. The most suitable option is "does/hasn't stayed," which correctly reflects this combination of tenses.

Option B: did/isn't staying
This option is incorrect. "Did/isn't staying" uses past tense followed by present tense, which doesn't fit the logical flow of the sentence.

Option C: has done/wasn't staying
This option is incorrect. "Has done/wasn't staying" is not the appropriate tense combination for expressing the cause-and-effect relationship described in the sentence.

Option D: was doing/hasn't been staying
This option is incorrect. "Was doing/hasn't been staying" is not the most suitable tense combination to convey the intended meaning of the sentence.

Option E: is doing/doesn't stay
This option is incorrect. "Is doing/doesn't stay" uses present tense followed by present tense, which doesn't convey the desired cause-and-effect relationship between the son's actions and his performance.

The correct answer is Option A: does/hasn't stayed, which accurately represents the appropriate tenses and effectively conveys the cause-and-effect relationship described in the sentence.