“On no account _____ to feed the animals,” the warning can be seen on the signboard on front of every cage (笼子).
She ____________ the path as the trees around her became thicker.
Once ________ more attention, the little trees could have grown better.
After ten hours’ operation, the doctors managed to _____the one-year-old twins at the head.
It remains______ whether the medicine has side effect.
New reports say peace talks between the two countries have ____with no agreement reached.