The folk song concert was so well _______ that all the tickets had been sold out on the first day.
.The global warming is going to be a big problem and many people are wondering ________ we can do with it.
.The little girl _______ reading her favourite book alone under the tree, while the rest _________ talking excitedly about their trip.
.The manager and his assistants discussed the plan that they would like to see __________ the next year.
.The boy asked his parents to buy him a pair of binoculars __________ which to watch football games.
.She is the only one of those women archaeologists who ________ chosen to go to Loulan.