The drilling in Antarctica dragged on slowly because of lack of money, equipment breakdowns, environmental ______ and severe cold.

—Did you see the new movie directed by that famous director? It’s said to be ___ great fun. ---No, I have been busy repairing all the broken office___ these days.

. You must be there within an hour. There should be no _______ in sending the information. 

--- How can I use iPhone 4S ?--- Just refer to the _______.

The girl was so happy to find ______ in the garden.