careless and made mistakes

0He was careless and made many mistakes during the exam (or on his exam).02br
02br
00John is very careless because he makes many mistakes on his exam. (cause and effect backwards...John makes many mistakes on his exam because he is careless) I really can't think of a time when you would say this like this in the present tense. He makes mistakes on his exams or he made mistake

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01cite10Vincent Teo12cite10Can I say, 12br
12br
10(a) He was careless and made mistakes 11u10in 11b10/ on12b12u10 11u11b10his / the12b12u10 exam. 11b10I don't know if 11i11u10in12u10 the exam12i1

0Can I say,02br
02br
00(a) The careless boy did some mistakes in his test paper.02br
02br
00(b) He is careless because he makes a lot of mistakes in his test.02br
02br
00(c) She was careless and has many mistakes in the English paper. 02br
02br
00(d) She was careless so she made a lot of mistakes in her examination.

0Re "in the exam," I believe we would say, "I misunderstood two questions [that were] 01b01i01u00in02u02i02b00 the exam." Also, "I made several mistakes 01b01i01u00on02u02i02b00 the exam." I suppose the prepositions could be reversed.0-

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01cite10Avangi12cite10It should be understood (I hope) that one does not 11u11b10have12b12u10 mistakes until the exam is evaluated and judged to include errors. (Philosophers may argue.) "You have seven mistakes on your exam."12blockquote

10I may have been too hasty on this. I can pict

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01cite10Vincent Teo12cite10Can I say, 12br
12br
10(a) The careless boy did some mistakes in his test paper. 11b10We don't "do" mistakes; we "make" them.12b12br
12br
10(b) He is careless because he makes a lot of mistakes in his test. 11b10Cause and effect are still reversed.

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01cite10Avangi12cite12br
10Re "in the exam," I believe we would say, "I misunderstood two questions [that were] 11b11i11u10in12u12i12b10 the exam." Also, "I made several mistakes 11b11i11u10on12u12i12b10 the exam." I suppose the p

0If I'm not mistaken, Avangi also wrote earlier in the thread that 'on' would be the more common choice. I agree with that too. 02br
00However, I can imagine 'in' possibly being used occasionally, particularly if the speaker's mindset is something along the lines of "I misunderstood two questions (01i00that were contained02i00) in the exam". 0-

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01cite10Yankee12cite12br
10However, I can imagine 'in' possibly being used occasionally, particularly if the speaker's mindset is something along the lines of "I misunderstood two questions (11i10that were contained12i10) in the exam". 12br
12br
12blockquote

10I don't think a na

0 01blockquote

01cite10Yankee12cite10If I'm not mistaken, Avangi also wrote earlier in the thread that 'on' would be the more common choice. I agree with that too. 12br
10However, I can imagine 'in' possibly being used occasionally, particularly if the speaker's mindset is something along the lines of "I misunderstood two questions (1