C20-4f
Practice saying the phrases below and test yourself with the speech-recognition tool.(Note: This tool currently does not work on iOS mobile devices.) 爺爺的車子是黑色的。爷爷的车子是黑色的。 Use the recording tool (or any recording tool you have) to record and hear your practice. (For premium plus members) When you are feeling confident, upload your recording for grading and feedback.