Ai làm giúp em với ạ V. Put the verbs in brackets in the correct forms. 1. There (be) ______________ big problems in many parts of the world. 2. They (play) ______________ badminton next week. 3. Mary (not go) ______________ with us to the museum next weekend. 4. David never (take) ______________ the bus to school. 5. Most shops usually (open) __________ at 8.00 a.m. and (close) _________ at 6.00 p.m. 7. We (build) ________________ a tree house last week. 7. He (not / lose) ________________ any games so far. 8. I (not / do) ________________ my homework yet. 9. Who (come) ________________ into our house a minute ago? 10. How can people (prevent) ______________ headache?