sentence: She had been trying to improve her English skills since September by taking an English course , but she still felt unready to cover a whole math topic using this language with the Clil method , because she was placed at the B2 level in reading and listening , while in speaking and writing the level she had joined after doing a specific test was only B1 .
modified: She was trying to improve her English skills since September by taking an English course , but she had felt herself still unready to keep a whole math topic using this language with the Clil method , because she was placed to the B2 level in reading and listening while in speaking and writing the level she had joined doing a specific test was only the B1 .
transformation: VERB:TENSE, VERB:TENSE, OTHER, VERB, PREP, PUNCT, PREP, DET