Li Lei has been to __________ many times this month.
The rescuing soldiers in the helicopters ______ to land on that area, but failed again.
His great success _________ hard work and good methods.
.We would not allow her ________ across the enemy line.
. __________in a white uniform, he looks more like a cook a doctor.
Wouldn’t it be ____________ wonderful world if all nations lived in _____ peace with one another?