He can speak ___________ English.

One is expected to behave _________ on some special occasions.

Look at that girl! Is it Susan—No, it _______ be her. She has gone backto her hometown.

Japan says its prime minister promised toprovide the world with "maximum transparency" about ____ accident atthe Fukushima nuclear power plant during _____ telephone call

I phoned you last night. Why didn’t you answer— Sorry. I ______ TV at that time and didn’t hear it.