______ he entered the university, his English has been much improved.
A: Before
B: After
C: When
D: Since
A: Before
B: After
C: When
D: Since
举一反三
- _____ he entered the university, his English has been much improved.
- No sooner had he entered Harvard ______ his sister entered Yale. A: since B: after C: than D: before
- 中国大学MOOC: His English is excellent because he has been speaking since he _____ a boy of twelve.
- It will be a long time ____ Peter _____ his work. A: since, has finished B: after, finishes C: when, will finish D: before, finishes.
- 6.John thinks it won’t be long _____ he is ready for his new job. A: When B: before C: after D: since