Do you know the boy ___ is standing under the tree?-Yes, he is my friend, Peter.
Do you prefer spring ________ summer?―________, because it’s warm and flowers start to come out．
The new airport has been in _______ for two years and it _______ to be a quiet place.
Must I take out the trash?—No, you ________.
Would you like ______ a movie with us tonight? —Sorry, I have to help my mother do some chores.