—Look! How long ______ like this?
—More than 20 days! It’s usual here that rain pours without stopping in May.

My cousin went to Canada two years ago. He ____ there for a few months and then went to America.

My friend has returned from the UK. She ______ at Oxford for four years, during which we communicated with each other on the Internet.

Our friendship _____ quickly over the weeks that followed.

________ repeatedly, the problem still appeared in the beginners’ homework.

In the past decades, sea ice ______ in the Arctic as a result of global warming.

Hearing the news about Neil Armstrong's death,____．

--- Tom, can you answer my question?
--Er, I’m very sorry, Miss Evens． I___________ about something else．

With the development of science, more new technology         to the field of IT.