A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man.
—I thought you had English.—No. it has been useful in my work.
– Excuse me . Could you tell me ? - You can take the No.17 bus .
The library assistant says I can the magazine for two weeks.
- Would you mind my using your bike for a day ? - . I need to use it today .
-What's your favorite ? -Surmmer. Because I can swim in the river in summer.