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Many students have difficulty     math. A. learns B. to learn C. learn D. learning

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international students solve their money problem in different ways  international students can’t study full time because they have to do spare-time jobs  American students prefer to study in their own country  American students can attend colleges abroad easily  
difficulty in learning    difficulty to learn    difficulties learned    difficulties to learn  
in; remember    for; to remember    on; remembering    with; remembering  
to explain    explaining    being explained    explained  
guarantee  guard  guest  guardian  
it’s easier to get part-time work abroad  there are more activities to take part in than at home  everyone can get scholarships or special loans  their main problem abroad is the lack of money  
why    because    how    when  
in; remember    for; to remember    on; remembering    with; remembering   
inexpensive  high  free from charge  costless  
in doing  to do  with  doing  
international students solve their money problem in different ways  international students can’t study full time because they have to do spare-time jobs  American students prefer to study in their own country  American students can attend colleges abroad easily  
guarantee  guard  guest  guardian  
difficulty in learning    difficulty to learn    difficulties learned    difficulties to learn  
inexpensive  high  free from charge  costless