 Re: Can you use two "in"s in this sentence? and order of words?
1. Yes - they're two different clauses, : You're going to meet in the school and your uncle used to work in the school - so you either need to add "in" after "work" or use "where :
John and I are going to meet in the school (which) my uncle used to work in.
John and I are going to meet in the school where my uncle used to work.
2. Either is possible though 1a sounds most likely to me in most contexts.But it depends what you want to emphasise - why she is doing the courses (in which case use 1a) or when she is doing them (in which case possibly 1b).
A I heard Maria didn't get the job because she doesn't speak any foreign languages well.
B : Yes - so she's decided to take a couple of courses next month to improve her English skills.
A : I want Maria to go to the conference in Japan in three weeks time.
B : She can't. HRD is sending her on a couple of courses to improve her English skills next month. She'll be in London then.
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