Two fifths of the police _____ in the school near the town.
A: has trained
B: have trained
C: has been trained
D: have been trained
A: has trained
B: have trained
C: has been trained
D: have been trained
举一反三
- （science program）has two modern computer labs, Internet access and teachers who have been trained in the latest technology.
- By the end of last year we ____ more than 2,000 teachers of English all over the world. (2002) A: trained B: would have trained C: had trained D: have trained
- She ____________ for this position for five months. A: was trained B: has trained C: is training
- By the end of this month he _______________ horses for 20 years. A: trained B: will train C: is training D: will have been training
- Mary is a turner. She spent three years in a factory ______ for the job. A: to be trained B: training C: for being trained D: being trained