I lost my way in complete darkness and ,______ matter worse, it began to rain.
John ___ be a basketball player.He’s much too short.
See who’s there! ____ it be Mary?
“Can I take it away?” “You ___ better not.”
“Let’s go to the library, shall we?” “____”
“Do you have to leave now? ” “I’m sorry, but I really ____.”A. can’t B,have C.should D.must