. Mexico city is bigger than New York city. -> New York city is not as …………………………………………………………. 72. What’s your age? -> How ………………………………………………………………? 73. Why don’t we go out for a change? -> What about………………………………………………………………………? 74. This English book is old. -> This ………………………………………………………………… 75. How much does this bar of soap cost? -> What is ………………………………………………………..? 76. How long is the Red river? -> What …………………………………………………………..? 77. My mother often goes to work at seven fifteen -> At a ………………………………………………… 78. Ngan walks to school every morning. -> Ngan goes ………………………………………………… 79. How high is this wall, Lan? -> What …………………………………………………………? 80.There are 659 students and 35 teachers in our school. -> Our school…………………………………………………… giúp với m.n ơi