Đề bài:Turn these sentences into active voice; 1.This house was built by my workers ten years ago -------------------------------------------------------------- 2.The rubbish wasn't collected by them -------------------------------------- 3.Was a new school built in your village last year? ------------------------------------------ 4.A lot of work is done every day ----------------- 5.Many trees are cut down to make paper ---------------------- 6.I was given a beautifull flower on my birthday by Dung ---------------------------------- 7.The television was turned on 2 hours ago ----------------------------------------- 8.Were the envelopes reused many times? -------------------------------------- 9.Many places in Vietnam aren't visited by French --------------------------------------- 10.English is spoken widely on the world -------------------------------------