The passengers should wait in ________ when they want to get on the plane.
#6549
A
this way
B
line
C
danger
D
hope
推荐题目
The ________ doctors are carrying ________ boxes. 
#6251
A
woman; paper
B
women; papers
C
woman; paper’s
D
women; paper
The earliest English ___ was written in a kind of English that is now difficult ___.  
#5763
A
poem; to understand
B
poet; to be understood
C
poetry; to be understand
D
poetry; to understand