题目内容
Why ______ your brother often _______ the museum ?
A. do , visit B. do, visits C. does, visit
C
【解析】
试题分析：句意:你的哥哥为什么经常参观这家博物馆? 在一般现在时态中，谓语动词若为行为动词，其一般疑问句要借助于do和does来构成，同时行为动词变为原形。本句中主语your brother是单数第三人称，故助动词用does，选C。
考点：主谓一致
点评：一般现在时态中，当主语是单数第三人称时，谓语动词用单数形式，其他人称，谓语动词用原形。若谓语动词若为行为动词，其否定式和疑问句要借助于助动词do和does来构成，并且将行为动词还原为动词原形。当主语是单数第三人称时，助动词用does。
omeone
becomes a parent, he / she likes worrying things. They worry about everything
about you. They do a lot for you, though something would make you angry,
because they care about you and worry about you . They worry about your choice
of friends, the food you eat, your work at school, how much sleep you get, etc.
2. They want you to grow up
healthily and happily.John is a famous writer now. Bob said he was not a good student ___41_____ he was young. He was often late for____42___ and didn’t like doing his homework. Sometimes, he ______43____ in class while the teacher was teaching. He didn’t understand much, ____44____but he always thought he understood everything. One day the teacher _____45___ the students a question, “When Jack was ten years old, _____46____ brother Ben was twenty. Jack is fifteen now and _____47___ is his brother Ben? John said, “That’s easy. Ben is twice as old as Jack, so he is thirty now.”
Another time, the ____48_____ in a science class asked, “When it thunders(打雷), _______49___ do we always see the light before we hear the sound?”
“But, Miss,” said John quickly, “don’t you ___50_____ our eyes are in front of our ears?”
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