一般过去时/现在完成时.麻烦各位了.1、My grangma _____(die) when I _____ (be)
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1、My grangma _died____(die) when I was_____ (be) only three years old.

2、Ben _made____ (make) a model plane just now.

3、Ben _hasn't made____ (not make) a model plane yet.

9、She _has studied____ (study) in Shanghai for three three years.

10、He _wrote____ (write) a letter to me last night.

11、My teacher isn't in Shanghai.She has gone_____ (go) to Thailand.

12、The train ___left__ (leave) the station fifteen minutes ago.

13、Kitty __has___ already _bought____ (buy) a new pair of trousers.

14、___Have__ you ever _been____ (be) to Shanghai Zoo?

15、It __has been___ (be) almost ten years since I last ___saw__ (see) your daughter.