This problem is ________ that one.

________ animals are in danger and there will be ________ space for them if we don’t take any actions.

We know the boy ______.He likes the music________.

---         does your sister have lunch?
--- At school.

– __________ have you been skating?
– For five hours.

He told us ______ exciting news that we all cheered with joy.

This fashion show in our school was so ________ that we heard ________ shouts everywhere.

---________ do you do exercise ?
---Once a week .
A. How long       B. How often     C. How soon

He is as ________ as his father .
A. tall         B. taller      C. shorter

Some Math problems in this book are     difficult for the students       work out.