"Seventy-one" is "( )“

"Seventy-one" is "( )“ Thirty and seventy is one h（ ） Twenty-two and seventy-eight is one h(). about seventy-one p___ of the earth is coveed by water. one hundred seventy one thousand 是不是 171000 His grandfather is o___ seventy the old grandma is seventy对 seventy 提问 The shirt is seventy yuan.( seventy yuan划线) My grandpa is (seventy) 括号提问 My grangma is seventy year old. my grandfather is seventy 划线部分提问 连词成句plus one seventy equals thirty hundred