It was in the university my sister studies I met the film star. [ ]

David, could you tell me _________ the Olympics take place—Every four years. The 32st Olympics will take place in Tokyo in 2020.

Though I ______ the phone number many times, the foreigner still couldn’t write it down.

A child _____ parents are dead is called an orphan.

Here I can only give you some purely ___ views of howwe can control the situation.