He has finished reading the story book. When ______ he ______ to read it, do you know?
A: did; began
B: did; begin
C: has; begun
D: had; begun
A: did; began
B: did; begin
C: has; begun
D: had; begun
举一反三
- 中国大学MOOC: He has finished reading the story book. When ______ he ______ to read it, do you know?
- Not until he left his home to know how important the family was for him. A: did he begin B: had he begun C: he began D: he has began
- I’d like to know ________ Chinese. A: when he began to learn B: when did he begin to learn C: when did he begin learning D: when did he began learning
- Hardly _________ our walk when it began to rain. A: we began B: we had begun C: had we begun D: has we begun
- Only after liberation to be treated as human beings. A: did they begin B: they had begun C: they did begin D: had they begun