Great changes have taken place since you _____.
A: left
B: leave
C: leaving
D: have left
A: left
B: leave
C: leaving
D: have left
举一反三
- Great changes _____ place since he left here. A: have been taken B: have taken C: were taken
- Great changes have taken place since you _____.
- Great changes have taken place since then in the factory_____we are working. Great changes have taken place since then in the factory_____we are working.
- Great changes (have) (taken place) (since) I (had visited) the city.() A: have B: taken place C: since D: had visited
- Great changes have taken place in China since 1977.Still changes will take place in the future.