Would you slow down a bit, please? I can’t 　　　 you. 

A. keep up with     B. put up with

C. make up for     D. hold on to

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　　If you do not use your arms or your legs for some time, they become weak. When you ___1___ using them again, they ___2___ become strong again. Everybody knows this and nobody would think of ____3___ this fact ___4___ there are many people who do not ___5____ to know that memory works in the ___6___ way.

　　____7___ someone says that he has a good memory, he ____8___ means that he ____9___ his memory by practicing exercising it. When someone ___10____ says that his memory is poor, he actually means that he ____11____ give it enough chances to become ____12___. Have you ever ____13____ that people who cannot read or write usually have ____14___ memories than those who can? This is ____15___ those who ____16___ read or write ____17___ remember things. They have to remember dates, places, names, songs and stories. So their memory is the whole time ___18___. So ___19___ you want to have a good memory, you should learn from those people, and ____20____ by remembering what you see, hear, feel and write. If so, you must have a good memory.

 Would you slow down a bit, please? I can’t 　　　 you. 

A. keep up with  B. put up with     C. make up for    D. hold on to