- English as a Second Language (ESL)
- Past perfect continuous negative
- Age 15+
-
level: Upper Intermediate
- English
คำแนะนำของผู้เขียน
A brief practice on present perfect continuous negative
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- English as a Second Language (ESL)
- Past perfect continuous negative
- Age 15+
- level: Upper Intermediate
- English
คำแนะนำของผู้เขียน
A brief practice on present perfect continuous negative