With the rapid development of medical science, we ________ more new drugs used in the treatment of cancer

His father arrived in Beijing _____________the night ____________December 1.

What do you think is _____ to happen to me tomorrow? — Sorry, I don’t know. [ ]

My Dad did not the idea that I would go camping with my friends this weekend. He said it was dangerous for girls to live outside.

. We are looking for an inexpensive hotel .