Great changes have taken place _____ I started junior high school.
A: when
B: since
C: after
D: until
A: when
B: since
C: after
D: until
举一反三
- Great changes have taken place in our school ____ you left. A: since B: until C: before D: when
- 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 since you _____.
- Great changes have taken place in China since 1977.Still changes will take place in the future.