-Is this kind of digital camera made of steel?-Yes, and it's widely used ______ taking photos.
--Would you please go out for a walk with me? -__, but I'm too busy now.A. That's right.B. I'd love toC. Of course not
Most animals walk ____ four legs.A. of B. to C. on
—We are going to play in tomorrow’s football match.I feel very nervous.Dad.—________.I'm sure you can win the match.
The man ________ is talking to our teacher is Betty’s father.
If you have trouble pronouncing these words, you can repeat them over and over again ________ you are comfortable with them.