It’s hard to rescue drowning people because they ________ so much. 
#83331
A
sink
B
swim
C
jump
D
struggle
推荐题目
Our car ______ on our way to school, so we had to walk there.
#69041
A
broke up
B
broke off
C
broke down
D
broke away
 One third of the people trapped in the ruins _______ at last.
#74305
A
has dug out
B
was dug out
C
have dug out
D
were dug out