Note: We use the present perfect tense when the exact time of an action is not clear or important. We use it with time expressions such as: already, ever, for, just, lately, never, recently, since, yet
the past simple tense
1. ‘_H_a_v_e_ you _s_e_e_n_ my pen?’ ‘Yes, I _s_a_w_ it on your desk just now.’ (see)
2. ‘_H_a_v_e_ you _h_a_d_ dinner?’ ‘Yes, I _h_a_d_ it with Mary.’ (have)
1. We _h_a_v_e_s_t_u_d_i_e_d (study) English for about five years.
2. They _h_a_v_e_l_iv_e_d_ (live) in the south since their daughter was born.
3. The student h_a_s__f_in_i_s_h_e_d(finish) her homework already.
2. “Tell the students to stop shouting.
We __C__ our essays .”
A. write
B. have been writing
C. are writing D. have written
3. My uncle, Sam, __C__ manager of the firm.