II. Put the verbs into the suitable form, the present perfect or the present perfect progressive. 1. A: How long.........(you/study)English?    B: I.........(learn) English since I was twelve. 2. A: Are you waiting for someone? B: Yes,I.........(wait) for two hours, but my friend.........(not come) yet 3. A: I .........(lose) my address book.........(you/see) it anywhere? B: Yes,I.........(just/see) it on the bookshelf. 4.A: You look tired.........(you/work) so hard? B:Yes,I.........(study) for four hours and probably won't finish until midnight. 5. .........(you/see) Mark recetly? B: No, I .........(not/see) him since Christmas, I wonder where he.........(live) since then.  

1. have you studied - have learned

2. have been waiting - has not come

3. have lost - Have you seen - have just seen

4. Have you been working - have been studying

5. Have you seen - haven't seen - has lived