The members of the board are discussing the problem right now; it will _____ have been solved by the end of next week.
( ) 24. Electricity _________ us with light, heat and power.
( ) 23. More and more people are signing up for Yoga classes nowadays , _______ advantage of the health and relaxation benefits.
( ) 22. _______ will the life in the future ______?
( ) 21. The weather report says it will ________ cold tomorrow.
( ) 20. ---- Mary has broken the secret, you know? ---- No. ________, she wouldn’t have kept silent at the meeting.