I just wonder____ that makes her so excited. A. why it does B. what he does how it is D. what it is
---You don’t often see them, do you? ---No, I see ______of them.
He is clever and hard-working, so he has _____ reason to succeed in the exam.
It’s ______, as I trust you so much.
One of the students hasn’t prepared ____ lessons very well.
Either the boy or his sister must have _____ dinner here.