Yesterday at the rétaurant, I (see )……….Pam ,an old friend of mine .I (not see )………….her for years. At first I (not recognize)…………her because she (lose)……………… at least fifty pounds.

Yesterday at the restaurant, I (see ) saw Pam, an old friend of mine.

I (not see)haven't seen her for years. S + have/has (not) + .... since/for

At first I (not recognize) didn't recognize her because she (lose) lost at least fifty pounds.

Đáp án lần lượt điền vào các ô trống 

`_` saw ( vì có DHNB : yesterday ) 

`→` Chia theo khẳng định S + V_ed\2 + O 

`_` haven't seen ( vì có DHNB : for years )

`→` Chia HTHT (+) S + have \ has + PP + O 

`_` didn't recognize ( Chia theo thì đầu bài ) 

`→` Chia theo phủ định (-) S + didn't + V_inf + O 

`_` lost ( Chia theo thì đầu bài ) 

`→` Chia theo khẳng định S + V_ed\2 + O 

`Khoa`