Have your child explain how he is going to answer the question. Make sure that your child gives clear reasons for his answers. Help your child find proof that her answer is correct. You can do this by looking together in the reading passage for the answer. When reading a passage, the child should read to understand, not to commit to memory.
Students can always look back in the passage to find the answer.
Think of it as an open book test. When two passages are given in a row, encourage the child to read the first one, and then answer all of the questions that relate to the first passage. Then have her read the second passage and answer the questions that relate to that passage. For written answers, look to make sure that capital letters, punctuation, and spelling are correct. Ask your child to read the answer aloud so you can both hear that it makes sense.