–Hi , Ann. How can you improve your English so much?--Oh, nothing difficult. The you work at it, the progress you will make.
I think picking apples ________ very interesting.
What’s your brother like? ________.
Helen told me that she had some problems _______ his English learning.
I think maths is not ________ science.
---Which pen can I take? ---You can take ______ pen you like.