It__________ about 20 years to build the pyramids.
A. has been taken
B. may have taken
C. has been taking
D. may take
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The road__________ two years ago has been destroyed.
A. building
B. built
C. which built
D. was built
下面哪些是轻声的结构助词:( )
A. 来、去、上、下
B. 子、儿、头、们
C. 着、了、过
D. 的、地、得
下面哪些是轻声的时态助词:( )
A. 的、地、得
B. 着、了、过
C. 上、下、里
D. 啊、吧、了、吗
下面哪些是轻声的语气助词:( )
A. 上、下、里
B. 的、地、得
C. 啊、了、吧、吗、呢、的
D. 子、儿、头、们