单选题______from the tenth floor when the policeman
单选题I was______ about the exam______I couldn't get
单选题______, if he doesn't learn he knows nothing.
单选题The sun heats the earth, ______is very important
单选题America will never again have as a nation the
单选题He always did well at school______having to do
单选题Susan is very hardworking, but her pay is
单选题______for your help, we'd never have been able
单选题"You must always obey your parents. ""Oh, I must
单选题He must have had an accident, or he______then.
单选题______is the center of our planetary system was
单选题Turn on the television or open a magazine and
单选题Firms that use computers have found that the
单选题I meant______the matter with you, but I had some
单选题______as it was at such a time, his work
单选题Not until ten o'clock______it was too late to
单选题By signing an application, I asked that an
单选题When I try to understand______that prevents so
单选题The students will put off the match until next
单选题Not until ten o'clock______it was too late to