JAMB - English Language (2018 - No. 46)
Choose the word(s) or phrase(s) which best fill(s) the gap. By the time the plane reaches Harare, it __________in the air for twelve hours
has been
would be
would have been
should be
Giải thích
'By the time' is an adverb of time that can be used in the present, past and future tense. The question is, however, in the present tense which will be needing a present perfect tense to complete the sentence.