The virus came without people’s being aware of it and it was _________ assumed to be a common one. But with more cases reported, it proved wrong.

So far, several ships have been reported missingthe coast of Bermuda Island

Thomas Edison is known _____inventions______ a great inventor.

Tom’s father____ to London last month. He ______ there three times.

If we can’t find all our souvenirs here, wecan go to ________ shopping mall.