Ⅹ. 76. Would; like 77. Did; help 78. didn’t use 79. fix up 80. What; do

Ⅺ. 81. start 82. idea 83. what 84. his 85. read 86. dog 87. daughters 88. doing 89. hoped 90. weekly Ⅻ. One possible version: Dear Tina, I’d like to tell you our class plans for volunteer work in March. We’ll help clean up the train station on March 4. On March 11, we’ll go to the old people’s home to help wash the clothes and clean the rooms. And we’ll give performances, too. On March 18, we’ll go to the People’s Park to fix up bicycles and radios for people nearby. On March 25, we’ll go to the primary school near our school to help the children with their homework and tell them stories. I’m sure we’ll have a very meaningful March.

Yours, Lu Bing