The idea puzzled me so much that I stopped for a few seconds to try to _______.
Storm chasing is so dangerous that some chasers are often hurt in accidents ______ by driving in a heavy rain.
Believe it or not, crying is a way you can imagine ______ pressure.
All the clothes donated by the citizens need cleaning thoroughly before being sent to the earth-stricken area, ______ ?
My friend has returned from the UK. She ______ at Oxford for four years, during which we communicated with each other on the Internet.
What he said at the meeting made Mary rather embarrassed, so he felt that he ______ differently.