The heating system has recently been repaired to make it more _________ (efficiency).
举一反三
- The heating system has recently been _______ to make it more efficient. A: modified B: guided C: removed D weeded D: weeded
- Recently more and more attention has been _.
- The old musical instrument . A: (a) has been in the family for a long time B: (b) was bought recently C: (c) was sold recently D: (d) was repaired recently
- The radio _______ by my brother now. ( ). A: has been repaired B: is being repaired C: is repaired D: has repaired
- While<br/>we were in London that year, the London Bridge________. A: Is being repaired B: has been repaired C: was being repaired D: had been repaired