--- I feel nervous about the coming summer.---- Me , too. Hot weather _____ makes people feel hot, ______ causes serious health problems.

Although he is very old, _________ he works very hard.

 --___________ is your phone number? --It’s 86502566. 

Frank often wears a mask _____ he can keep fit in the foggy and hazy (霾) weather.

—      good time we had at the party last night!— Yes． It was         exciting party that I would never forget it．