When he was ___ , Joe went to the United States .这是一道英语选择题,我不会所以向大家请教.选项 A on his twentis B in his twenties C in his twenties D in his twenty

He___ ___ ___write when he was four He___ ___ ___write when he was four. Jim did well in swimming when he was young.同义句Jim ___ ___ ___ swimming when he was young. My son ___ quickly when he was fourteen.(grow) I was calling him when he came.(同意句）As i was ___ ___ ___ him,he came He began ___ ___(作曲)when he was ten years old. He began ___ ___(作曲)when he was ten years old. 他三岁就会画画了.he ___ ___ when he was three He couldn't hear anything when he was born .(改为同义句） He was ___ ____ ___. He was just falling asleep when someone knocked at the door.(改写同义句)He was just ___ to sleep when ___ was a ___ at the door. when he was born ,he looked like a white mouse.同义句when ___ ___ ___ ___,he looked like a white mouse. when he __ to the chool gate,he found it was ___.suddenly he ___ it was ___,he had aleady forgotten He started learning English when he was three years old.(改写同义句)He started ___ English ___ ___ ___ ___ three. When was ___ __ was in 1998 when he was in middle school.that;It.为什么?为什么用It啊? How much ___ your brother ___ when he was born?（weigh） He was happy when he saw his mother.改为同义句He was happy ___ ___his mother He was so ___(please) when he heard that his father would come to see him. he ___(major)in english when he was in the university