----- Nội dung dịch tự động từ ảnh ----- k. Unless it (rain), we (go) on a picnic. 21. My father (teach) English in that school for 8 years.... m. We (know) each other since we were in primary school. n. The girl (not see) her friends for a long time. 50. How long you (live) in the USA? - Since last year.
