Ayearlater，withthenation’seconomy________，Bush’sapprovalratingdroppedbelow40percent
B
in trouble ：陷入困境。由于经济陷入困境，所以支持率下降了很多，符合句意。
Fishis________andexpensiveatthistimeoftheyearinthisarea.
Thestudentsarerequiredto________themainideasofthearticleintheirownwords.