17. …………….a lot of children ………………in fund-raising performance last year?
A. Did / participate
B. Did / participated
C. Did / to participate
D. Did / participates
18. We …………………… each other a long time ago.
A. meet
B. met
C. have met
D. meeting
19. I forgot to wear a sun hat today and I got a…………….
A. earache
B. backache
C. headache
D. stomachache
20. I promise that I ……………… late for school again.
A. am not
B. wasn’t
C. not be
D. won’t be
21.Our dad …………… away warm clothes to street children two days ago.
A. give
B. gave
C have given
D. will give
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