---Ouch! You hurt me!---I am sorry. But I______ any harm I ______ to drive a rat out.A didn’t mean; tried B. don’t mean; am tryingC. haven’t meant; tried D. didn’t mean; was trying
_________ you may have, you should gather your courage to face the challenge.
He made another wonderful discovery, _______ of great importance to science.
These kinds of shoes ________ well.
In April, 2009, President Hu inspected the warships in Qingdao, ________ the 60th anniversary of the founding of the PLA Navy.
He is constantly ________ not to do that, but he still goes on doing it all the same.