II. Find and correct the mistake in each sentence.
1. People can use wind or hydro power to convert from electricity. (->to)
2. Wind power is clean, abundant, widely available, and environmental friendly.
D. Environmental -> Environmentally
3. It takes me fifteen minutes going to school by bus.
C. going -> to go
4. She goes to the bakery by foot, but sometimes she goes there by bicycle.
A. by -> on
5. You can to work or even take a nap on train.
A. to work -> work

Result + Explanation:

1. D. from ⇒ to (convert to) — convert + (it) + from.

2. D. environmental ⇒ environmentally (friendly là trạng từ (adj) nên trước nó là tính từ (adv))

3. C. going ⇒ to go

(It takes + time + to + verb: dùng để nói về việc dành, tốn bao nhiêu thời gian để làm việc gì đó.)

4. A. by ⇒ on

/* go on foot: đi bộ ta không dùng by foot mà là on foot. */

5.  A. to work ⇒ work (Cấu trúc: can/will + Vo)