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题目
题型:不详难度:来源:
--- I haven’t seen Mary recently. And you?
--- Me neither. I’m afraid she _________ to her experiment for too long a time.
A.is devotingB.was devotedC.has been devotingD.has been devoted

答案
D
解析
考查时态。固定词组be devoted to致力于。根据上下文可知我最近没有空间Mary,是因为她致力于做实验。使用完成时表示过去发生的事情对现在的影响。
核心考点
试题【--- I haven’t seen Mary recently. And you?--- Me neither. I’m afraid she _______】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
Hello, I _______ you ______ in London. How long have you been here?
A.don’t know; wereB.hadn’t known; are
C.haven’t known; areD.didn’t know ; were

题型:不详难度:| 查看答案
Someone _____ his car in front of my house and it’s blocking my way.
A.has parkedB.parkedC.was parkingD.had parked

题型:不详难度:| 查看答案
A Colorado woman said that her iPhone 4 ______ fire while charging overnight.
A.had caughtB.has caught fireC.was catchingD.caught

题型:不详难度:| 查看答案
They studied what ______ since 2007 and found Australian electricity prices were among the  highest in the developed world.
A.has happenedB.happenedC.had happenedD.has been happening

题型:不详难度:| 查看答案
Toni Morrison, Nobel Prize-winning American writer, says if there’s a book you really want to read, but it ______ yet, then you must write it.
A.hasn’t been writtenB.hasn’t writtenC.doesn’t writeD.isn’t written

题型:不详难度:| 查看答案
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