We won’t give up _____ we should fail ten time.
He__________ he would be able to leave tomorrow, but it's beginning to took difficult.
—I put him down for a well-educated man. —___________ ?—I mean that he's a well-educated man.
Jack is one of those men who_________ best evening and the most difficult situations.
--Whose advice do you think I should take?--___________.
__________ you understand the rule, you will have no further difficulty.