Never before _______ so many restaurants offering food delivery.
A: there are
B: there have been
C: were there
D: have there been
A: there are
B: there have been
C: were there
D: have there been
举一反三
- ______ so many people put of work as today. A: Before have never there been B: There have been never before C: Never before have there been D: Have there never before been
- Never before ______ so many people in our country been interested in sports. A: has B: have C: had D: are
- According to the author's observation, college students ______. A: have never been so materialistic as today B: have never been so interested in the arts. C: have never been so financially well off as today D: have never attached m much importance to moral sens
- The moon __________ many times by men so far. A: have been visited B: has been visited C: were visited D: was visited
- I have been to many countries.but I have never seen a building with such a_design.