[ Grammar ]
Students of class 3B work really hard _____ they can do well in the test.
A. so
B. so that
C. so as to

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Should and Shouldn't › ViewWhen someone does you a favour, you _____thank you.
A. should say
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Complete the sentence: “If they ______ (study) harder, they would have passed the exam.”
A. study
B. studied
C. had studied
D. were studying