You seem to have known DrSmith for a long time—- That’strue ______ he joined our club six years ago

My uncle is a(n) _____ man. If he promises to do something, he is sure to do it.

_______ that Marie was able to set up new branches elsewhere. [ ]

It has been reported that some government leaders ________their authority and position to get illegal profits for themselves.

Our teacher told us light _________ muchfaster than sound .