[B] wonder

　　[C] undertake

　　[D] learn

　　72. [A] terrible

　　[B] unreliable

　　[C] unsolvable

　　[D] advisable

　　73. [A] other

　　[B] some

　　[C] others

　　[D] another

　　74. [A] up

　　[B] down

　　[C] toward

　　[D] aside

　　75. [A] crush

　　[B] brush

　　[C] push

　　[D] rush考試網(wǎng)

　　76. [A] following

　　[B] returning

　　[C] flowing

　　[D] pouring

　　77. [A] healthy

　　[B] swollen

　　[C] dreary

　　[D] radical