Not until _____,_______the diffiult problem.
I bought a vase of the Ming dynasty at such a low price at the Sunday market. It was really a nice __________.
He is wearing sunglasses to __________ his eyes from the strong sunlight.
It rained hard yesterday, __________ stopped me from going to work.
— Go for a picnic this weekend, OK?— __________. I love getting close to nature.
There was __________ time when the two countries were at __________ war.