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/ … but / … or not … or not … but
schedule journey pace transport
though unless however whatever
take out set out cut out blow out
/ ; but / ; or not; or not; but
schedule journey pace transport
would be had been was would have been
we’re going to fly we’ll be flying we’ll fly we are to fly
Had we not used Did we use If we didn’t use If we had used
would have will have had had would have had
/；but /；or not；or not；but
/；but /；or not；or not；but
a; a the; a a; the the; the
Although As While However
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