She has been waiting here _____ six O'clock.
Aever
Bsince
Cat
Dfor
Answer:
B. since
Read Explanation:
ഇവിടെ ഉപയോഗിക്കേണ്ട tense 'Present perfect continuous' ആണ്. കാരണം 'Present perfect continuous' ന്റെ time words ആണ് 'since' ഉം 'for' ഉം. Present perfect continuous ന്റെ format : subject + has/have + been + ing form + RPS( Remaining part of the sentence.) She + has ( Subject She വന്നാൽ has ആണ് auxiliary verb ഉപയോഗിക്കേണ്ടത്.) + been + waiting here+ since six O'clock.