The weather forecast says that ______ another storm tomorrow.
A. there will have
B. there will be
C. there has
D. there has been
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A: Listen! There__________ someone __________ at the door.B: It must be your sister.
A. is; knocking
B. is; knock
C. are; knocking
D. are; knock
Look! There _______ so many people _________here. Do you know what has happened?
A. is, standing
B. are, are standing
C. are, standing
D. is, is standing
SMA面层的结构特点是“三多一少”,具体指的是粗集料多、矿粉多、沥青多、细集料少。( )
A. 对
B. 错
SMA结构是典型的悬浮密实结构。( )
A. 对
B. 错