After ten hours’ drive, we came to ______ is called a green house, through the glass wall of _____, we saw lots of green plants.
---I went to see my friends off at the airport. ---Is that_____you were late for the important meeting?
Mary is crazy _______ playing the piano.
It is______ these stories can amuse her.
would you please_____this form for me to see if I’ve filled it right?
----Are you cold? ----No, __________.