By the end of 2020,the organization ____ more than 140 children in need.

1. By the end of 2020,the organization ____ more than 140 children in need.

A. helped B. washelping C. hadhelped D. hashelping

【考点】

过去完成时;

【答案】

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单选题普通

1. Seeing him rush into the room with tears in his eyes, I asked him what ____.

A. wouldhappen B. hadhappened C. happened D. washappened

单选题普通

2. By the time my mother came back from work, my sister and I ____ supper and were waiting for her at the table.

A. havecooked B. hadcooked C. werecooking D. wouldcook

单选题普通

3. Before the project in 2021, over 100 students ______ to stop using social media for seven days.

A. persuaded B. were persuaded C. have persuaded D. had been persuaded

单选题普通