Choose the underlined part among A, B, C or D that needs correcting
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B. Choose the underlined part among A, B, C or D that needs correcting.
31. When I **walk** past the park, I **saw** some **children** **play** football.
32. After John **eaten** dinner, he **wrote** several letters and **went** to bed.
33. What **did** you do at 9 o'clock last night? I **phoned** you but **nobody** answered.
34. When I **arrived** at the station, the train **has** already **left**.
35. Ann and Susan **have known** each other **during** they **were** at school.
36. She **has disappeared** three days ago, and they are still **looking** for her now.
37. After Mrs. Wang had **returned** to her house from work, she **was cooking** dinner.
38. It’s the first **time** I **saw** this film.
39. After he **graduates** from university, he **joined** the army.
40. Up to now, there **had been** no woman **being** **chosen** the US president.
B. Choose the underlined part among A, B, C or D that needs correcting.
31. When I **walk** past the park, I **saw** some **children** **play** football.
32. After John **eaten** dinner, he **wrote** several letters and **went** to bed.
33. What **did** you do at 9 o'clock last night? I **phoned** you but **nobody** answered.
34. When I **arrived** at the station, the train **has** already **left**.
35. Ann and Susan **have known** each other **during** they **were** at school.
36. She **has disappeared** three days ago, and they are still **looking** for her now.
37. After Mrs. Wang had **returned** to her house from work, she **was cooking** dinner.
38. It’s the first **time** I **saw** this film.
39. After he **graduates** from university, he **joined** the army.
40. Up to now, there **had been** no woman **being** **chosen** the US president.