There is clear evidence ______the most difficult feeling of all to interpret is bodily pain.

________ in a space suit in the base, the young man looks more like an astronaut I’ve been ________.[ ]

Most students enjoy having lessons ____ are interesting and lively.

Some measures are needed to _____ the farmland against shifting sand. [ ]

en’t seen Sara since the last time we met on her graduation ceremony, and she has changed beyond _______.