I. Use the correct form of the verbs in brackets in the present perfect tense
1. I (learn) .......................... English for 4 years.
2. They (live) ...................... in Da Nang since 2001.
3. .............you (eat) ........................ Chinese food yet?4. ..............you (visit) ...................... Ben Thanh Market yet?
5. I (not see) ...................... her recently?II. Change the sentences from the active into the passive
6. They grow rice in tropical countries..............................................................................................................................
7. They sell jeans all over the world................................................................................................................................
8. We can solve the problem...................................................................................................................................
9. You must do this exercise carefully....................................................................................................................................
10. They are going to build a new bridge in the area.....................................................................................................................................