—________ English movies is helpful to learn English.—But I find _______ hard to understand when the people speak fast.
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.
Miss Green has ______ free time than Mr Green. She is busy all day.