It’s ______ cold today, but I have still finished ______ homework.

The class teacher came up and put a jacket _____ the boy to prevent him from catching a cold .

—Who ______ is on the second floor? —Jenny, my sister. 

--Mom, 1 lave done a good job in today' exam.--Wonderful! That’s a good         .And you will do better in the following exams.

I hear they are going to London, but I don’t know ________ they will stay there.