71. The period ____dance classes increases gradually from two or three hours a day to five or six.

　　A. referred to B. kept to C. got to D. given to

　　72. —— What did she ____so much money?

　　—— Nothing but a necklace made of glass.

　　A. spend on　　　　　B. pay for　　　　　C. buy for　　　　　D. sell to

　　73. If we _______, we can realize the progress we have made.

　　A. turn back B. look back C. answer back D. move back

　　74. After the meeting, I ____to write a report on our next term’s work.

　　A. set about B. made off with C. set out D. set off

　　75. If you do not feel well, you should not ____going to see the doctor. ?

　　A. pick out B. give off C. put off D. make out

　　76. We must ____that our customs and habits aredifferent from theirs.

　　A. keep in mind B. keep up with C. keep in touch D. keep to ourselves

　　77. I think the car will ___ till we get to the village.

　　A. extend out B. go in for C. hold out D. hold up

　　78. The museum is ___in a park surrounded by a number of impressive buildings.

　　A. blocked B. based C. occupied D. located

　　79. A good writer must __what he writes with what has happened around him.

　　A. connect B. think C. join D. know

　　80. The gentleman does not ____the argument but watches the other guests.

　　A. drop in B. fill in C. put in D. join in