It was never clear ________ the man hadn't reported the accident sooner.(2011·江苏)
. Elephants would ______ if men were allowed to shoot as many as they wished.
I had to ______ because someone else wanted to use the phone.
“Have great changes taken place in your village?” “Yes, A new school was ______ in the village last year.”
If the new arrangement doesn’t _____, we’ll go back to the old one.
All the girls swam in the lake except two, who _____ halfway.