You have come across quite a few words containing ch during the last two weeks. For example, you have used the words Milch and Brötchen.
Use the audio below several times to practise the German ch-sound. Practise your pronunciation as you listen and repeat what you hear in the recording. Then record yourself using a mobile device in order to check that your pronunciation is similar to the one you can hear in the audio.
The figure below shows an image of a famous chocolate cake from Vienna: die Sachertorte.
To practise the pronunciation and use of gern, nicht gern etc, listen and repeat the questions that are asked in the audios below about this cake and other food and drink. Then record yourself answering the questions. Model answers are given in the feedback, although of course your likes and dislike might be different!