一、根据句意用 by，with，in 或 through 填空
1. Vincent sometimes sits ______ the river and listens to music.
2. All the work will be finished ______ tomorrow morning.
3. They go to school ______ bike.
4. You will achieve happiness if you work hard. Just as the saying goes，“Happiness is achieved __________ hard work!”
5. You can make a living ______ selling second-hand clothes.
6. He dug a hole in the ground ________ his bare hands(空手).
7. He said ______ a low voice，“Go there by bus.”

1. by 2. by 3. by 4. through 5. by 6. with 7. in

二、用方框中所给词的适当形式填空
time I note by
1. I joined a study group，and my English improved little ______ little.
2. I review the grammar by __________ something important down and doing exercises every day.
3. By the ______ I was thirteen，I started improving my writing skills by writing diaries.
4. Learning English is difficult，so I plan to spend much time practicing using English every day by __________.

1. by 2. noting 3. time 4. myself