1 I started doing homework two hours ago. -> I have
2 I started working in this company five years ago. -> I have
3 She started writing this novel 3 months ago. -> She has
4 Lan began playing the piano ten years ago. -> Lan has
5 They started learning English 2 weeks ago. -> They have
6 My sister began teaching English 20 years ago. -> My sister has
7 .It began raining half an hour ago. -> It has
8 They began building this house one month ago. -> They have
9 He started having his breakfast 1 hour ago. -> He has
10 Mr. Ba began talking to our teacher an hour ago. -> Mr. Ba has