–Where’s Carol?–I saw her _______ into the teacher’s office a few minutes ago.
Everybody is here ________ Tom , because he is ill in hospital .
.Traveling by plane is the most comfortable , but it is also the _________ .
I want to go to Beijing _______ because I can see the beautiful scenery all the way .
The sun is __________ the earth .
Rose sings ________ and her handwriting is __________ .