cho dạng đúng của động từ:
1. he helped me (do)____ this mast
2. do you mind (open)____the dose
3. would you like (drink)____ some milk?
4. Mai are (speak)____ English well
5. it tarke me 2 hours a day (do)____ my homework
6. they spend a lot of money (help)____ old people
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